105 files changed, 836 insertions, 440 deletions

diff --git a/samples/basic-intro-1.ta b/samples/basic-intro-1.ta
index 73b6dae..17cff6a 100644
--- a/samples/basic-intro-1.ta
+++ b/samples/basic-intro-1.ta
@@ -1,167 +1,72 @@
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diff --git a/samples/card-01.tb b/samples/card-01.tb
new file mode 100644
index 0000000..3748b3d
--- /dev/null
+++ b/samples/card-01.tb
@@ -0,0 +1,13 @@
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diff --git a/samples/card-02.tb b/samples/card-02.tb
new file mode 100644
index 0000000..f51efb1
--- /dev/null
+++ b/samples/card-02.tb
@@ -0,0 +1,15 @@
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diff --git a/samples/card-03.tb b/samples/card-03.tb
new file mode 100644
index 0000000..6783418
--- /dev/null
+++ b/samples/card-03.tb
@@ -0,0 +1,27 @@
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diff --git a/samples/card-04.tb b/samples/card-04.tb
new file mode 100644
index 0000000..ff99055
--- /dev/null
+++ b/samples/card-04.tb
@@ -0,0 +1,36 @@
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diff --git a/samples/card-05.tb b/samples/card-05.tb
new file mode 100644
index 0000000..0ae9310
--- /dev/null
+++ b/samples/card-05.tb
@@ -0,0 +1,33 @@
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diff --git a/samples/card-06.tb b/samples/card-06.tb
new file mode 100644
index 0000000..c1742bb
--- /dev/null
+++ b/samples/card-06.tb
@@ -0,0 +1,11 @@
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diff --git a/samples/card-07.tb b/samples/card-07.tb
new file mode 100644
index 0000000..67ad291
--- /dev/null
+++ b/samples/card-07.tb
@@ -0,0 +1,21 @@
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diff --git a/samples/card-08.tb b/samples/card-08.tb
new file mode 100644
index 0000000..0496e30
--- /dev/null
+++ b/samples/card-08.tb
@@ -0,0 +1,54 @@
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diff --git a/samples/card-09.tb b/samples/card-09.tb
new file mode 100644
index 0000000..d8aa2af
--- /dev/null
+++ b/samples/card-09.tb
@@ -0,0 +1,21 @@
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diff --git a/samples/card-10.tb b/samples/card-10.tb
new file mode 100644
index 0000000..80fefe2
--- /dev/null
+++ b/samples/card-10.tb
@@ -0,0 +1,61 @@
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diff --git a/samples/graphics-dandilion.tb b/samples/card-11.tb
index 6653524..6653524 100644
--- a/samples/graphics-dandilion.tb
+++ b/samples/card-11.tb
diff --git a/samples/card-12.tb b/samples/card-12.tb
new file mode 100644
index 0000000..9da4065
--- /dev/null
+++ b/samples/card-12.tb
@@ -0,0 +1,42 @@
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diff --git a/samples/card-13.tb b/samples/card-13.tb
new file mode 100644
index 0000000..81dcce1
--- /dev/null
+++ b/samples/card-13.tb
@@ -0,0 +1,24 @@
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diff --git a/samples/card-14.tb b/samples/card-14.tb
new file mode 100644
index 0000000..2ef9d09
--- /dev/null
+++ b/samples/card-14.tb
@@ -0,0 +1,24 @@
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diff --git a/samples/card-15.tb b/samples/card-15.tb
new file mode 100644
index 0000000..7e3a61b
--- /dev/null
+++ b/samples/card-15.tb
@@ -0,0 +1,13 @@
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diff --git a/samples/card-16.tb b/samples/card-16.tb
new file mode 100644
index 0000000..f3d607a
--- /dev/null
+++ b/samples/card-16.tb
@@ -0,0 +1,29 @@
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diff --git a/samples/card-17.tb b/samples/card-17.tb
new file mode 100644
index 0000000..7213132
--- /dev/null
+++ b/samples/card-17.tb
@@ -0,0 +1,54 @@
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+[15, "box", 511, 430, [14, 16, null]],
+[16, ["string", "sides"], 566, 430, [15, null]],
+[17, "forward", 470, 472, [14, 37, 20]],
+[18, "startfill", 452, 388, [12, 14]],
+[19, "stopfill", 452, 574, [14, null]],
+[20, "right", 470, 514, [17, 22, null]],
+[21, ["number", 360], 598, 514, [22, null]],
+[22, ["division2", 0], 528, 514, [20, 21, 23]],
+[23, "box", 622, 556, [22, 24, null]],
+[24, ["string", "sides"], 677, 556, [23, null]],
+[25, "stack", 987, 257, [27, 26, 29]],
+[26, ["string", "polygon"], 1045, 257, [25, null]],
+[27, ["repeat", 147], 969, 215, [8, 28, 25, null]],
+[28, ["number", 6.0], 1028, 215, [27, null]],
+[29, ["storein", 0], 987, 299, [25, 30, 52, 44]],
+[30, ["string", "sides"], 1055, 299, [29, null]],
+[31, ["number", 1.0], 1152, 383, [52, null]],
+[32, "box", 1128, 341, [52, 33, null]],
+[33, ["string", "sides"], 1183, 341, [32, null]],
+[34, ["storein", 0], 205, 458, [5, 35, 36, 10]],
+[35, ["string", "length"], 273, 458, [34, null]],
+[36, ["number", 200.0], 273, 500, [34, null]],
+[37, "box", 541, 472, [17, 38, null]],
+[38, ["string", "length"], 596, 472, [37, null]],
+[39, ["storein", 0], 987, 425, [44, 40, 53, 49]],
+[40, ["string", "length"], 1055, 425, [39, null]],
+[41, ["number", 25.0], 1152, 509, [53, null]],
+[42, "box", 1128, 467, [53, 43, null]],
+[43, ["string", "length"], 1183, 467, [42, null]],
+[44, ["vspace", 0], 987, 383, [29, 39]],
+[45, "setcolor", 987, 551, [49, 48, null]],
+[46, ["number", 15.0], 1118, 593, [48, null]],
+[47, "color", 1118, 551, [48, null]],
+[48, ["plus2", 0], 1064, 551, [45, 47, 46]],
+[49, ["vspace", 0], 987, 509, [39, 45]],
+[50, "setcolor", 205, 332, [1, 51, 5]],
+[51, ["number", 0.0], 282, 332, [50, null]],
+[52, ["minus2", 0], 1055, 341, [29, 32, 31]],
+[53, ["minus2", 0], 1055, 467, [39, 42, 41]]]
diff --git a/samples/game-spiralaterals.ta b/samples/game-spiralaterals.ta
index d8b95fd..26c116e 100644
--- a/samples/game-spiralaterals.ta
+++ b/samples/game-spiralaterals.ta
@@ -1,64 +1,68 @@
-[[0, ["start", 2.0], 60, 200, [null, 60]],
-[1, "forward", 700, 274, [40, 6, 7]],
-[2, "right", 700, 358, [7, 3, null]],
-[3, ["number", 90], 758, 358, [2, null]],
-[4, ["number", 20.0], 128, 288, [60, null]],
-[5, "pop", 825, 316, [6, null]],
-[6, ["product2", 0], 771, 274, [1, 62, 5]],
-[7, ["vspace", 0], 700, 316, [1, 2]],
-[8, "push", 440, 254, [36, 9, 42]],
-[9, ["number", 1], 498, 254, [8, null]],
-[10, ["repeat", 0], 78, 832, [12, 11, 38, null]],
-[11, ["number", 4], 137, 832, [10, null]],
-[12, ["vspace", 0], 78, 790, [23, 10]],
-[13, ["repeat", 218], 60, 414, [33, 14, 28, null]],
-[14, ["number", 400], 119, 414, [13, null]],
-[15, ["vspace", 0], 78, 664, [16, 32]],
-[16, ["setxy2", 20], 78, 540, [27, 17, 18, 15]],
-[17, ["random", 0], 136, 540, [16, 19, 21, null]],
-[18, ["random", 0], 136, 622, [16, 20, 22, null]],
-[19, "leftpos", 222, 540, [17, null]],
-[20, "bottompos", 222, 622, [18, null]],
-[21, "rightpos", 222, 582, [17, null]],
-[22, "toppos", 222, 664, [18, null]],
-[23, "setcolor", 78, 748, [32, 24, 12]],
-[24, ["random", 0], 155, 748, [23, 25, 26, null]],
-[25, ["number", 0], 241, 748, [24, null]],
-[26, ["number", 100], 241, 790, [24, null]],
-[27, "penup", 78, 498, [28, 16]],
-[28, "seth", 78, 456, [13, 29, 27]],
-[29, ["random", 0], 136, 456, [28, 30, 31, null]],
-[30, ["number", 0], 222, 456, [29, null]],
-[31, ["number", 90], 222, 498, [29, null]],
-[32, "pendown", 78, 706, [15, 23]],
-[33, ["fillscreen", 0], 60, 330, [60, 34, 35, 13]],
-[34, "black", 142, 330, [33, null]],
-[35, ["number", 0], 142, 372, [33, null]],
-[36, "hat", 440, 200, [null, 37, 8]],
-[37, ["string", "action"], 498, 212, [36, null]],
-[38, "stack", 96, 874, [10, 39, null]],
-[39, ["string", "action"], 154, 874, [38, null]],
-[40, "hat", 700, 220, [null, 41, 1]],
-[41, ["string", "action 2"], 758, 232, [40, null]],
-[42, "stack", 440, 296, [8, 43, 44]],
-[43, ["string", "action 2"], 498, 296, [42, null]],
-[44, "push", 440, 338, [42, 45, 46]],
-[45, ["number", 1], 498, 338, [44, null]],
-[46, "stack", 440, 380, [44, 47, 48]],
-[47, ["string", "action 2"], 498, 380, [46, null]],
-[48, "push", 440, 422, [46, 49, 50]],
-[49, ["number", 1], 498, 422, [48, null]],
-[50, "stack", 440, 464, [48, 51, 52]],
-[51, ["string", "action 2"], 498, 464, [50, null]],
-[52, "push", 440, 506, [50, 53, 54]],
-[53, ["number", 3.0], 498, 506, [52, null]],
-[54, "stack", 440, 548, [52, 55, 56]],
-[55, ["string", "action 2"], 498, 548, [54, null]],
-[56, "push", 440, 590, [54, 57, 58]],
-[57, ["number", 2.0], 498, 590, [56, null]],
-[58, "stack", 440, 632, [56, 59, null]],
-[59, ["string", "action 2"], 498, 632, [58, null]],
-[60, ["storein", 0], 60, 246, [0, 61, 4, 33]],
-[61, ["string", "my box"], 128, 246, [60, null]],
-[62, "box", 825, 274, [6, 63, null]],
-[63, ["string", "my box"], 880, 274, [62, null]]]
+[[0, ["start", 2.0], 400, 80, [null, 59]],
+[1, "forward", 400, 454, [39, 6, 7]],
+[2, "right", 400, 538, [7, 3, null]],
+[3, ["number", 90], 458, 538, [2, null]],
+[4, ["number", 20], 468, 168, [59, null]],
+[5, "pop", 525, 496, [6, null]],
+[6, ["product2", 0], 471, 454, [1, 61, 5]],
+[7, ["vspace", 0], 400, 496, [1, 2]],
+[8, "push", 720, 134, [35, 9, 41]],
+[9, ["number", 1], 778, 134, [8, null]],
+[10, ["repeat", 0], 940, 510, [12, 11, 37, null]],
+[11, ["number", 4], 999, 510, [10, null]],
+[12, ["vspace", 0], 940, 468, [23, 10]],
+[13, ["repeat", 0], 400, 294, [33, 14, 66, null]],
+[14, ["number", 100.0], 459, 294, [13, null]],
+[15, ["vspace", 0], 940, 342, [16, 32]],
+[16, ["setxy2", 20], 940, 218, [27, 17, 18, 15]],
+[17, ["random", 0], 998, 218, [16, 19, 21, null]],
+[18, ["random", 0], 998, 300, [16, 20, 22, null]],
+[19, "leftpos", 1084, 218, [17, null]],
+[20, "bottompos", 1084, 300, [18, null]],
+[21, "rightpos", 1084, 260, [17, null]],
+[22, "toppos", 1084, 342, [18, null]],
+[23, "setcolor", 940, 426, [32, 24, 12]],
+[24, ["random", 0], 1017, 426, [23, 25, 26, null]],
+[25, ["number", 0], 1103, 426, [24, null]],
+[26, ["number", 100], 1103, 468, [24, null]],
+[27, "penup", 940, 176, [28, 16]],
+[28, "seth", 940, 134, [64, 29, 27]],
+[29, ["random", 0], 1039, 134, [28, 30, 31, null]],
+[30, ["number", 0], 1125, 134, [29, null]],
+[31, ["number", 90], 1125, 176, [29, null]],
+[32, "pendown", 940, 384, [15, 23]],
+[33, ["fillscreen", 0], 400, 210, [59, 34, 63, 13]],
+[34, ["number", 0], 482, 210, [33, null]],
+[35, "hat", 720, 80, [null, 36, 8]],
+[36, ["string", "line"], 778, 92, [35, null]],
+[37, "stack", 958, 552, [10, 38, null]],
+[38, ["string", "line"], 1016, 552, [37, null]],
+[39, "hat", 400, 400, [null, 40, 1]],
+[40, ["string", "segment"], 458, 412, [39, null]],
+[41, "stack", 720, 176, [8, 42, 43]],
+[42, ["string", "segment"], 778, 176, [41, null]],
+[43, "push", 720, 218, [41, 44, 45]],
+[44, ["number", 1], 778, 218, [43, null]],
+[45, "stack", 720, 260, [43, 46, 47]],
+[46, ["string", "segment"], 778, 260, [45, null]],
+[47, "push", 720, 302, [45, 48, 49]],
+[48, ["number", 1], 778, 302, [47, null]],
+[49, "stack", 720, 344, [47, 50, 51]],
+[50, ["string", "segment"], 778, 344, [49, null]],
+[51, "push", 720, 386, [49, 52, 53]],
+[52, ["number", 3], 778, 386, [51, null]],
+[53, "stack", 720, 428, [51, 54, 55]],
+[54, ["string", "segment"], 778, 428, [53, null]],
+[55, "push", 720, 470, [53, 56, 57]],
+[56, ["number", 2], 778, 470, [55, null]],
+[57, "stack", 720, 512, [55, 58, null]],
+[58, ["string", "segment"], 778, 512, [57, null]],
+[59, ["storein", 0], 400, 126, [0, 60, 4, 33]],
+[60, ["string", "my box"], 468, 126, [59, null]],
+[61, "box", 525, 454, [6, 62, null]],
+[62, ["string", "my box"], 580, 454, [61, null]],
+[63, "white", 482, 252, [33, null]],
+[64, "hat", 940, 80, [null, 65, 28]],
+[65, ["string", "spiralateral"], 998, 92, [64, null]],
+[66, "stack", 418, 336, [13, 67, null]],
+[67, ["string", "spiralateral"], 476, 336, [66, null]]]
diff --git a/samples/graphics-csquiral.ta b/samples/graphics-csquiral.ta
index 397b665..8ab4677 100644
--- a/samples/graphics-csquiral.ta
+++ b/samples/graphics-csquiral.ta
@@ -20,5 +20,4 @@
 [19, ["plus2", 0], 855, 532, [18, 20, 21]],
 [20, "box1", 909, 532, [19, null]],
 [21, ["number", 1], 909, 574, [19, null]],
-[22, ["vspace", 0], 737, 448, [12, 16]],
-[-1, ["turtle", "Yertle"], 907.9985581895907, 87.04554561204145, 220.0, 151.33309303159845, 220.0, 20.0]]
\ No newline at end of file
+[22, ["vspace", 0], 737, 448, [12, 16]]]
diff --git a/samples/graphics-redwisp.ta b/samples/graphics-redwisp.ta
index 4f3fcee..b5658e9 100644
--- a/samples/graphics-redwisp.ta
+++ b/samples/graphics-redwisp.ta
@@ -37,5 +37,4 @@
 [36, ["string", "my box"], 586, 252, [35, null]],
 [37, "box", 673, 378, [10, 38, null]],
 [38, ["string", "my box"], 728, 378, [37, null]],
-[39, ["vspace", 0], 518, 420, [5, 33]],
-[-1, ["turtle", "Yertle"], 0.0, 0.0, 0.0, 99.72222222222223, 50, 15.0]]
\ No newline at end of file
+[39, ["vspace", 0], 518, 420, [5, 33]]]
diff --git a/samples/math-dice.ta b/samples/math-dice.ta
index ee1f310..0fed83b 100644
--- a/samples/math-dice.ta
+++ b/samples/math-dice.ta
@@ -1,115 +1,119 @@
-[[0, ["start", 1.334], 400, 120, [null, 20]],
-[1, ["random", 0], 293, 567, [7, 2, 3, null]],
-[2, ["number", 1], 350, 567, [1, null]],
-[3, ["number", 6], 350, 595, [1, null]],
-[4, ["random", 0], 293, 512, [7, 5, 6, null]],
-[5, ["number", 1], 350, 512, [4, null]],
-[6, ["number", 6], 350, 540, [4, null]],
-[7, ["plus2", 20], 257, 512, [75, 4, 1]],
-[8, ["storein", 0], 212, 622, [12, 93, 11, null]],
-[9, ["number", 1], 293, 678, [11, null]],
-[10, "box", 293, 650, [11, 95, null]],
-[11, ["plus2", 0], 257, 650, [8, 10, 9]],
-[12, ["vspace", 40], 212, 540, [75, 8]],
-[13, ["repeat", 124], 200, 456, [14, 23, 75, null]],
-[14, "hat", 200, 420, [null, 15, 13]],
-[15, ["string", "toss dice"], 239, 428, [14, null]],
-[16, "stack", 400, 235, [27, 17, 18]],
-[17, ["string", "toss dice"], 439, 235, [16, null]],
-[18, "stack", 400, 263, [16, 19, null]],
-[19, ["string", "plot results"], 439, 263, [18, null]],
-[20, ["storein", 0], 400, 151, [0, 21, 22, 27]],
-[21, ["string", "trials"], 445, 151, [20, null]],
-[22, ["number", 1600], 445, 179, [20, null]],
-[23, "box", 239, 456, [13, 24, null]],
-[24, ["string", "trials"], 276, 456, [23, null]],
-[25, "hat", 200, 180, [null, 26, 82]],
-[26, ["string", "clear bins"], 239, 188, [25, null]],
-[27, "stack", 400, 207, [20, 28, 16]],
-[28, ["string", "clear bins"], 439, 207, [27, null]],
-[29, ["storein", 0], 212, 300, [33, 85, 30, 107]],
-[30, ["number", 0], 257, 328, [29, null]],
-[31, ["number", 1], 1001, 252, [32, null]],
-[32, ["plus2", 0], 965, 224, [80, 87, 31]],
-[33, ["repeat", 42], 200, 272, [82, 34, 29, null]],
-[34, ["number", 11], 239, 272, [33, null]],
-[35, "hat", 480, 420, [null, 36, 61]],
-[36, ["string", "plot results"], 519, 428, [35, null]],
-[37, "penup", 700, 456, [101, 39]],
-[38, "pendown", 700, 678, [68, 113]],
-[39, ["setxy2", 40], 700, 484, [37, 41, 40, 65]],
-[40, ["number", 0], 739, 566, [39, null]],
-[41, ["product2", 0], 739, 484, [39, 44, 42]],
-[42, ["minus2", 0], 775, 512, [41, 89, 43]],
-[43, ["number", 6], 840, 540, [42, null]],
-[44, ["number", 50], 775, 484, [41, null]],
-[45, ["repeat", 0], 480, 568, [77, 46, 103, 70]],
-[46, ["number", 11], 519, 568, [45, null]],
-[47, ["repeat", 63], 960, 512, [56, 48, 49, 57]],
-[48, ["number", 2], 999, 512, [47, null]],
-[49, "forward", 972, 540, [47, 64, 50]],
-[50, "right", 972, 568, [49, 51, 52]],
-[51, ["number", 90], 1011, 568, [50, null]],
-[52, "forward", 972, 596, [50, 53, 54]],
-[53, ["number", 40], 1019, 596, [52, null]],
-[54, "right", 972, 624, [52, 55, null]],
-[55, ["number", 90], 1011, 624, [54, null]],
-[56, "startfill", 960, 484, [58, 47]],
-[57, "stopfill", 960, 664, [47, 109]],
-[58, "setcolor", 960, 456, [111, 60, 56]],
-[59, ["number", 10], 1047, 484, [60, null]],
-[60, ["product2", 0], 1011, 456, [58, 97, 59]],
-[61, "clean", 480, 456, [35, 62]],
-[62, "setshade", 480, 484, [61, 63, 77]],
-[63, ["number", 25], 537, 484, [62, null]],
-[64, "box", 1019, 540, [49, 99, null]],
-[65, "back", 700, 594, [39, 66, 67]],
-[66, ["number", 100.0], 739, 594, [65, null]],
-[67, "show", 700, 622, [65, 91, 68]],
-[68, "forward", 700, 650, [67, 69, 38]],
-[69, ["number", 100.0], 747, 650, [68, null]],
-[70, "penup", 480, 636, [45, 72]],
-[71, "pendown", 480, 720, [72, null]],
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-[73, ["number", 0], 519, 664, [72, null]],
-[74, ["number", -50], 519, 692, [72, null]],
-[75, ["storein", 0], 212, 484, [13, 76, 7, 12]],
-[76, ["string", "box"], 257, 484, [75, null]],
-[77, ["storein", 0], 480, 512, [62, 78, 79, 45]],
-[78, ["string", "box"], 525, 512, [77, null]],
-[79, ["number", 2], 525, 540, [77, null]],
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-[81, ["string", "box"], 965, 196, [80, null]],
-[82, ["storein", 0], 200, 216, [25, 83, 84, 33]],
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-[84, ["number", 2], 245, 244, [82, null]],
-[85, "box", 257, 300, [29, 86, null]],
-[86, ["string", "box"], 294, 300, [85, null]],
-[87, "box", 1001, 224, [32, 88, null]],
-[88, ["string", "box"], 1038, 224, [87, null]],
-[89, "box", 824, 512, [42, 90, null]],
-[90, ["string", "box"], 861, 512, [89, null]],
-[91, "box", 739, 622, [67, 92, null]],
-[92, ["string", "box"], 776, 622, [91, null]],
-[93, "box", 257, 622, [8, 94, null]],
-[94, ["string", "box"], 294, 622, [93, null]],
-[95, "box", 330, 650, [10, 96, null]],
-[96, ["string", "box"], 367, 650, [95, null]],
-[97, "box", 1047, 456, [60, 98, null]],
-[98, ["string", "box"], 1084, 456, [97, null]],
-[99, "box", 1056, 540, [64, 100, null]],
-[100, ["string", "box"], 1093, 540, [99, null]],
-[101, "hat", 700, 420, [null, 102, 37]],
-[102, ["string", "bar graph"], 739, 428, [101, null]],
-[103, "stack", 492, 596, [45, 104, null]],
-[104, ["string", "bar graph"], 531, 596, [103, null]],
-[105, "hat", 920, 160, [null, 106, 80]],
-[106, ["string", "next bin"], 959, 168, [105, null]],
-[107, "stack", 212, 356, [29, 108, null]],
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-[109, "stack", 960, 692, [57, 110, null]],
-[110, ["string", "next bin"], 999, 692, [109, null]],
-[111, "hat", 960, 420, [null, 112, 58]],
-[112, ["string", "bar"], 999, 428, [111, null]],
-[113, "stack", 700, 706, [38, 114, null]],
-[114, ["string", "bar"], 739, 706, [113, null]]]
+[[0, ["start", 1.334], 160, 100, [null, 20]],
+[1, ["random", 0], 258, 507, [7, 2, 3, null]],
+[2, ["number", 1], 319, 507, [1, null]],
+[3, ["number", 6], 319, 535, [1, null]],
+[4, ["random", 0], 258, 452, [7, 5, 6, null]],
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+[6, ["number", 6], 319, 480, [4, null]],
+[7, ["plus2", 20], 222, 452, [75, 4, 1]],
+[8, ["storein", 0], 172, 562, [12, 93, 11, null]],
+[9, ["number", 1], 258, 618, [11, null]],
+[10, "box", 258, 590, [11, 95, null]],
+[11, ["plus2", 0], 222, 590, [8, 10, 9]],
+[12, ["vspace", 40], 172, 480, [75, 8]],
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+[14, "hat", 160, 360, [null, 15, 13]],
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+[29, ["storein", 0], 452, 540, [33, 85, 30, 107]],
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+[59, ["number", 10], 1172, 404, [60, null]],
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+[62, "setshade", 340, 168, [115, 63, 77]],
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+[66, ["number", 100], 1119, 194, [65, null]],
+[67, "show", 1080, 222, [65, 91, 68]],
+[68, "forward", 1080, 250, [67, 69, 38]],
+[69, ["number", 100], 1130, 250, [68, null]],
+[70, "penup", 340, 319, [45, 72]],
+[71, "pendown", 340, 403, [72, null]],
+[72, ["setxy2", 0], 340, 347, [70, 73, 74, 71]],
+[73, ["number", 0], 380, 347, [72, null]],
+[74, ["number", -50], 380, 375, [72, null]],
+[75, ["storein", 0], 172, 424, [13, 76, 7, 12]],
+[76, ["string", "box"], 222, 424, [75, null]],
+[77, ["storein", 0], 340, 196, [62, 78, 79, 45]],
+[78, ["string", "box"], 390, 196, [77, null]],
+[79, ["number", 2], 390, 224, [77, null]],
+[80, ["storein", 0], 840, 456, [105, 81, 32, null]],
+[81, ["string", "box"], 890, 456, [80, null]],
+[82, ["storein", 0], 440, 456, [25, 83, 84, 33]],
+[83, ["string", "box"], 490, 456, [82, null]],
+[84, ["number", 2], 490, 484, [82, null]],
+[85, "box", 502, 540, [29, 86, null]],
+[86, ["string", "box"], 539, 540, [85, null]],
+[87, "box", 926, 484, [32, 88, null]],
+[88, ["string", "box"], 963, 484, [87, null]],
+[89, "box", 1211, 112, [42, 90, null]],
+[90, ["string", "box"], 1248, 112, [89, null]],
+[91, "box", 1119, 222, [67, 92, null]],
+[92, ["string", "box"], 1156, 222, [91, null]],
+[93, "box", 222, 562, [8, 94, null]],
+[94, ["string", "box"], 259, 562, [93, null]],
+[95, "box", 295, 590, [10, 96, null]],
+[96, ["string", "box"], 332, 590, [95, null]],
+[97, "box", 1172, 376, [60, 98, null]],
+[98, ["string", "box"], 1209, 376, [97, null]],
+[99, "box", 1179, 460, [64, 100, null]],
+[100, ["string", "box"], 1216, 460, [99, null]],
+[101, "hat", 1080, 20, [null, 102, 37]],
+[102, ["string", "bar graph"], 1120, 28, [101, null]],
+[103, "stack", 352, 280, [45, 104, null]],
+[104, ["string", "bar graph"], 392, 280, [103, null]],
+[105, "hat", 840, 420, [null, 106, 80]],
+[106, ["string", "next bin"], 880, 428, [105, null]],
+[107, "stack", 452, 596, [29, 108, null]],
+[108, ["string", "next bin"], 492, 596, [107, null]],
+[109, "stack", 1080, 607, [57, 110, null]],
+[110, ["string", "next bin"], 1120, 607, [109, null]],
+[111, "hat", 1080, 340, [null, 112, 58]],
+[112, ["string", "bar"], 1120, 348, [111, null]],
+[113, "stack", 1080, 306, [38, 114, null]],
+[114, ["string", "bar"], 1120, 306, [113, null]],
+[115, "fillscreen2", 340, 84, [61, 116, 118, 117, 62]],
+[116, ["number", 60], 402, 84, [115, null]],
+[117, ["number", 100], 402, 140, [115, null]],
+[118, "white", 402, 112, [115, null]]]
diff --git a/samples/sensors-loudness-monitor.ta b/samples/sensors-loudness-monitor.ta
index 7bb0b5f..d9b6553 100644
--- a/samples/sensors-loudness-monitor.ta
+++ b/samples/sensors-loudness-monitor.ta
@@ -1,74 +1,78 @@
-[[0, ["start", 2.0], 1217, 22, [null, 11]],
-[1, ["setxy2", 20], 1434, 84, [8, 3, 6, 46]],
-[2, "bottompos", 1546, 166, [6, null]],
-[3, "random", 1492, 84, [1, 4, 5, null]],
-[4, "leftpos", 1578, 84, [3, null]],
-[5, "rightpos", 1578, 126, [3, null]],
-[6, ["plus2", 0], 1492, 166, [1, 2, 7]],
-[7, ["number", 100], 1546, 208, [6, null]],
-[8, "penup", 1434, 42, [10, 1]],
-[9, "pendown", 1434, 250, [46, 52]],
-[10, "hat1", 1434, 0, [null, 8]],
-[11, "stack1", 1217, 64, [0, 12]],
-[12, "stack2", 1217, 106, [11, null]],
-[13, "hat2", 833, 0, [null, 14]],
-[14, "forever", 833, 42, [13, 38, 15]],
-[15, ["vspace", 0], 833, 78, [14, null]],
-[16, "storeinbox1", 894, 312, [71, 17, 40]],
-[17, "volume", 1012, 312, [16, null]],
-[18, "storeinbox1", 1434, 460, [47, 19, 42]],
-[19, ["number", 0.0], 1552, 460, [18, null]],
-[20, "forward", 1224, 433, [28, 27, 21]],
-[21, "right", 1224, 475, [20, 22, 23]],
-[22, ["number", 90], 1282, 475, [21, null]],
-[23, "forward", 1224, 517, [21, 24, 25]],
-[24, ["number", 25.0], 1294, 517, [23, null]],
-[25, "right", 1224, 559, [23, 26, null]],
-[26, ["number", 90], 1282, 559, [25, null]],
-[27, "box1", 1294, 433, [20, null]],
-[28, "repeat", 1160, 373, [50, 29, 20, 51]],
-[29, ["number", 2.0], 1210, 373, [28, null]],
-[30, "hat", 1160, 281, [null, 31, 50]],
-[31, ["string", "bar"], 1219, 289, [30, null]],
-[32, "stack", 894, 102, [38, 33, 64]],
-[33, ["string", "bar"], 953, 102, [32, null]],
-[34, "stack", 894, 396, [40, 35, 36]],
-[35, ["string", "bar"], 953, 396, [34, null]],
-[36, "wait", 894, 438, [34, 37, 62]],
-[37, ["number", 0.5], 952, 438, [36, null]],
-[38, "setcolor", 894, 60, [14, 39, 32]],
-[39, "white", 972, 60, [38, null]],
-[40, "setcolor", 894, 354, [16, 41, 34]],
-[41, "box2", 972, 354, [40, null]],
-[42, "storeinbox2", 1434, 502, [18, 43, null]],
-[43, "random", 1552, 502, [42, 44, 45, null]],
-[44, ["number", 0], 1638, 502, [43, null]],
-[45, ["number", 100], 1638, 544, [43, null]],
-[46, ["vspace", 0], 1434, 208, [1, 9]],
-[47, ["fillscreen", 0], 1434, 376, [52, 48, 49, 18]],
-[48, ["number", 60], 1520, 376, [47, null]],
-[49, "white", 1520, 418, [47, null]],
-[50, "startfill", 1160, 331, [30, 28]],
-[51, "stopfill", 1160, 451, [28, null]],
-[52, ["storein", 0], 1434, 292, [9, 53, 54, 47]],
-[53, ["string", "max"], 1503, 292, [52, null]],
-[54, ["number", 0.0], 1503, 334, [52, null]],
-[55, "box", 1002, 530, [63, 56, null]],
-[56, ["string", "max"], 1056, 530, [55, null]],
-[57, ["storein", 0], 946, 590, [61, 58, 59, null]],
-[58, ["string", "max"], 1015, 590, [57, null]],
-[59, "box1", 1015, 632, [57, null]],
-[60, "box1", 978, 488, [63, null]],
-[61, "if", 894, 522, [62, 63, 57, null]],
-[62, ["vspace", 0], 894, 480, [36, 61]],
-[63, ["greater2", 0], 932, 488, [61, 60, 55, null]],
-[64, "setcolor", 894, 144, [32, 67, 73]],
-[65, ["number", 50.0], 1026, 186, [67, null]],
-[66, "color", 1026, 144, [67, null]],
-[67, ["plus2", 0], 972, 144, [64, 66, 65]],
-[68, "storeinbox1", 894, 228, [73, 69, 71]],
-[69, "box", 1012, 228, [68, 70, null]],
-[70, ["string", "max"], 1066, 228, [69, null]],
-[71, "stack", 894, 270, [68, 72, 16]],
-[72, ["string", "bar"], 953, 270, [71, null]],
-[73, ["vspace", 0], 894, 186, [64, 68]]]
+[[0, ["start", 2.0], 967, 78, [null, 76]],
+[1, ["setxy2", 0], 1184, 169, [5, 77, 3, 41]],
+[2, "bottompos", 1296, 211, [3, null]],
+[3, ["plus2", 0], 1242, 211, [1, 2, 4]],
+[4, ["number", 100], 1296, 253, [3, null]],
+[5, "penup", 1184, 127, [7, 1]],
+[6, "pendown", 1184, 295, [41, 47]],
+[7, "hat1", 1184, 81, [null, 5]],
+[8, "stack1", 967, 250, [69, 9]],
+[9, "stack2", 967, 292, [8, null]],
+[10, "hat2", 602, 73, [null, 11]],
+[11, ["forever", 315], 602, 119, [10, 34, null]],
+[12, "storeinbox1", 620, 405, [66, 73, 75]],
+[13, "volume", 808, 405, [73, null]],
+[14, "storeinbox1", 1184, 505, [42, 15, 37]],
+[15, ["number", 0], 1302, 505, [14, null]],
+[16, "forward", 289, 397, [24, 23, 17]],
+[17, "right", 289, 439, [16, 18, 19]],
+[18, ["number", 90], 347, 439, [17, null]],
+[19, "forward", 289, 481, [17, 20, 21]],
+[20, ["number", 25], 360, 481, [19, null]],
+[21, "right", 289, 523, [19, 22, null]],
+[22, ["number", 90], 347, 523, [21, null]],
+[23, "box1", 360, 397, [16, null]],
+[24, ["repeat", 63], 271, 355, [45, 25, 16, 46]],
+[25, ["number", 2], 330, 355, [24, null]],
+[26, "hat", 271, 259, [null, 27, 45]],
+[27, ["string", "bar"], 329, 271, [26, null]],
+[28, "stack", 620, 195, [34, 29, 59]],
+[29, ["string", "bar"], 678, 195, [28, null]],
+[30, "stack", 620, 531, [35, 31, 32]],
+[31, ["string", "bar"], 678, 531, [30, null]],
+[32, "wait", 620, 573, [30, 33, 57]],
+[33, ["number", 0.1], 678, 573, [32, null]],
+[34, "setcolor", 620, 153, [11, 72, 28]],
+[35, "setcolor", 620, 489, [75, 36, 30]],
+[36, "box2", 697, 489, [35, null]],
+[37, "storeinbox2", 1184, 547, [14, 38, null]],
+[38, ["random", 0], 1302, 547, [37, 39, 40, null]],
+[39, ["number", 0], 1388, 547, [38, null]],
+[40, ["number", 100], 1388, 589, [38, null]],
+[41, ["vspace", 0], 1184, 253, [1, 6]],
+[42, ["fillscreen", 0], 1184, 421, [47, 43, 44, 14]],
+[43, ["number", 60], 1266, 421, [42, null]],
+[44, "white", 1266, 463, [42, null]],
+[45, "startfill", 271, 313, [26, 24]],
+[46, "stopfill", 271, 583, [24, null]],
+[47, ["storein", 0], 1184, 337, [6, 48, 49, 42]],
+[48, ["string", "max"], 1252, 337, [47, null]],
+[49, ["number", 0], 1252, 379, [47, null]],
+[50, "box", 756, 665, [58, 51, null]],
+[51, ["string", "max"], 811, 665, [50, null]],
+[52, ["storein", 0], 638, 723, [56, 53, 54, null]],
+[53, ["string", "max"], 706, 723, [52, null]],
+[54, "box1", 706, 765, [52, null]],
+[55, "box1", 732, 623, [58, null]],
+[56, ["if", 21], 620, 657, [57, 58, 52, null]],
+[57, ["vspace", 0], 620, 615, [32, 56]],
+[58, ["greater2", 0], 676, 623, [56, 55, 50, null]],
+[59, "setcolor", 620, 237, [28, 62, 68]],
+[60, ["number", 50], 751, 279, [62, null]],
+[61, "color", 751, 237, [62, null]],
+[62, ["plus2", 0], 697, 237, [59, 61, 60]],
+[63, "storeinbox1", 620, 321, [68, 64, 66]],
+[64, "box", 738, 321, [63, 65, null]],
+[65, ["string", "max"], 793, 321, [64, null]],
+[66, "stack", 620, 363, [63, 67, 12]],
+[67, ["string", "bar"], 678, 363, [66, null]],
+[68, ["vspace", 0], 620, 279, [59, 63]],
+[69, ["storein", 0], 967, 166, [76, 70, 71, 8]],
+[70, ["string", "my box_1"], 1035, 166, [69, null]],
+[71, ["number", 0.0], 1035, 208, [69, null]],
+[72, "red", 697, 153, [34, null]],
+[73, ["division2", 0], 738, 405, [12, 13, 74]],
+[74, ["number", 10.0], 832, 447, [73, null]],
+[75, ["vspace", 0], 620, 447, [12, 35]],
+[76, "clean", 967, 124, [0, 69]],
+[77, ["number", 0.0], 1242, 169, [1, null]]]
diff --git a/samples/sensors-psuedo-color.ta b/samples/sensors-psuedo-color.ta
index ab7284b..c5c8b97 100644
--- a/samples/sensors-psuedo-color.ta
+++ b/samples/sensors-psuedo-color.ta
@@ -1,6 +1,6 @@
 [[0, ["start", 2.0], 165, 175, [null, 30]],
 [1, "show", 165, 385, [24, 2, 6]],
-[2, ["journal", "/tmp/turtlepic.jpg"], 223, 385, [1, null]],
+[2, ["journal", "./samples/images/me.jpg"], 223, 385, [1, null]],
 [3, "see", 367, 797, [15, null]],
 [4, "repeat", 165, 553, [27, 5, 10, null]],
 [5, ["number", 200], 213, 553, [4, null]],
diff --git a/samples/sensors-soundpaint.ta b/samples/sensors-soundpaint.ta
index 61f80d1..3a5dff3 100644
--- a/samples/sensors-soundpaint.ta
+++ b/samples/sensors-soundpaint.ta
@@ -1,14 +1,18 @@
-[[0, ["start", 2.0], 439, 13, [null, 1]],
-[1, ["forever", 135], 439, 59, [0, 9, null]],
-[2, ["setxy2", 0], 457, 279, [9, 3, 4, 8]],
-[3, "mousex", 515, 279, [2, null]],
-[4, "mousey", 515, 321, [2, null]],
-[5, "volume", 613, 363, [6, null]],
-[6, ["division2", 0], 559, 363, [8, 5, 7]],
-[7, ["number", 10], 637, 405, [6, null]],
-[8, "setpensize", 457, 363, [2, 6, null]],
+[[0, ["start", 2.0], 75, 137, [null, 13]],
+[1, ["forever", 135], 75, 309, [13, 9, null]],
+[2, ["setxy2", 0], 93, 529, [9, 3, 4, 8]],
+[3, "mousex", 151, 529, [2, null]],
+[4, "mousey", 151, 571, [2, null]],
+[5, "volume", 265, 613, [6, null]],
+[6, ["division2", 0], 195, 613, [8, 5, 7]],
+[7, ["number", 100.0], 289, 655, [6, null]],
+[8, "setpensize", 93, 613, [2, 6, null]],
 [9, ["ifelse", [0, 0]],
-457, 93, [1, 10, 11, 12, 2]],
-[10, "mousebutton2", 513, 109, [9, null]],
-[11, "pendown", 475, 159, [9, null]],
-[12, "penup", 475, 219, [9, null]]]
+93, 343, [1, 10, 11, 12, 2]],
+[10, "mousebutton2", 149, 359, [9, null]],
+[11, "pendown", 111, 409, [9, null]],
+[12, "penup", 111, 469, [9, null]],
+[13, "fillscreen2", 75, 183, [0, 14, 16, 15, 1]],
+[14, ["number", 60], 157, 183, [13, null]],
+[15, ["number", 100], 157, 267, [13, null]],
+[16, "white", 157, 225, [13, null]]]
diff --git a/samples/sensors-valentine.ta b/samples/sensors-valentine.ta
index df7eba7..89a6dbf 100644
--- a/samples/sensors-valentine.ta
+++ b/samples/sensors-valentine.ta
@@ -109,5 +109,4 @@
 [108, "setpensize", 64, 290, [49, 109, 14]],
 [109, ["number", 7.0], 139, 290, [108, null]],
 [110, "setpensize", 64, 402, [56, 111, 43]],
-[111, ["number", 5], 139, 402, [110, null]],
-[-1, ["turtle", "Yertle"], 0.0, 0.0, 0.0, 0, 50, 5.0]]
\ No newline at end of file
+[111, ["number", 5], 139, 402, [110, null]]]
diff --git a/samples/thumbnails/basic-intro-1-es.png b/samples/thumbnails/basic-intro-1-es.png
new file mode 100644
index 0000000..ca4042c
--- /dev/null
+++ b/samples/thumbnails/basic-intro-1-es.png
diff --git a/samples/thumbnails/basic-intro-1.png b/samples/thumbnails/basic-intro-1.png
new file mode 100644
index 0000000..f15a528
--- /dev/null
+++ b/samples/thumbnails/basic-intro-1.png
diff --git a/samples/thumbnails/basic-intro-2-es.png b/samples/thumbnails/basic-intro-2-es.png
new file mode 100644
index 0000000..ba9ceaf
--- /dev/null
+++ b/samples/thumbnails/basic-intro-2-es.png
diff --git a/samples/thumbnails/basic-intro-2.png b/samples/thumbnails/basic-intro-2.png
new file mode 100644
index 0000000..2046121
--- /dev/null
+++ b/samples/thumbnails/basic-intro-2.png
diff --git a/samples/thumbnails/basic-intro-3.png b/samples/thumbnails/basic-intro-3.png
new file mode 100644
index 0000000..aea791b
--- /dev/null
+++ b/samples/thumbnails/basic-intro-3.png
diff --git a/samples/thumbnails/basic-repeat-squares.png b/samples/thumbnails/basic-repeat-squares.png
new file mode 100644
index 0000000..1c178aa
--- /dev/null
+++ b/samples/thumbnails/basic-repeat-squares.png
diff --git a/samples/thumbnails/basic-spiral.png b/samples/thumbnails/basic-spiral.png
new file mode 100644
index 0000000..85d6e6b
--- /dev/null
+++ b/samples/thumbnails/basic-spiral.png
diff --git a/samples/thumbnails/basic-square.png b/samples/thumbnails/basic-square.png
new file mode 100644
index 0000000..ac1496f
--- /dev/null
+++ b/samples/thumbnails/basic-square.png
diff --git a/samples/thumbnails/card-01.png b/samples/thumbnails/card-01.png
new file mode 100644
index 0000000..8c0b6a8
--- /dev/null
+++ b/samples/thumbnails/card-01.png
diff --git a/samples/thumbnails/card-02.png b/samples/thumbnails/card-02.png
new file mode 100644
index 0000000..2f4efc8
--- /dev/null
+++ b/samples/thumbnails/card-02.png
diff --git a/samples/thumbnails/card-03.png b/samples/thumbnails/card-03.png
new file mode 100644
index 0000000..c0b2828
--- /dev/null
+++ b/samples/thumbnails/card-03.png
diff --git a/samples/thumbnails/card-04.png b/samples/thumbnails/card-04.png
new file mode 100644
index 0000000..89be2e5
--- /dev/null
+++ b/samples/thumbnails/card-04.png
diff --git a/samples/thumbnails/card-05.png b/samples/thumbnails/card-05.png
new file mode 100644
index 0000000..fb0e407
--- /dev/null
+++ b/samples/thumbnails/card-05.png
diff --git a/samples/thumbnails/card-06.png b/samples/thumbnails/card-06.png
new file mode 100644
index 0000000..17e8f59
--- /dev/null
+++ b/samples/thumbnails/card-06.png
diff --git a/samples/thumbnails/card-07.png b/samples/thumbnails/card-07.png
new file mode 100644
index 0000000..391edcd
--- /dev/null
+++ b/samples/thumbnails/card-07.png
diff --git a/samples/thumbnails/card-08.png b/samples/thumbnails/card-08.png
new file mode 100644
index 0000000..74f634f
--- /dev/null
+++ b/samples/thumbnails/card-08.png
diff --git a/samples/thumbnails/card-09.png b/samples/thumbnails/card-09.png
new file mode 100644
index 0000000..3555996
--- /dev/null
+++ b/samples/thumbnails/card-09.png
diff --git a/samples/thumbnails/card-10.png b/samples/thumbnails/card-10.png
new file mode 100644
index 0000000..ebb4222
--- /dev/null
+++ b/samples/thumbnails/card-10.png
diff --git a/samples/thumbnails/card-11.png b/samples/thumbnails/card-11.png
new file mode 100644
index 0000000..207a466
--- /dev/null
+++ b/samples/thumbnails/card-11.png
diff --git a/samples/thumbnails/card-12.png b/samples/thumbnails/card-12.png
new file mode 100644
index 0000000..d10f8fa
--- /dev/null
+++ b/samples/thumbnails/card-12.png
diff --git a/samples/thumbnails/card-13.png b/samples/thumbnails/card-13.png
new file mode 100644
index 0000000..9463f91
--- /dev/null
+++ b/samples/thumbnails/card-13.png
diff --git a/samples/thumbnails/card-14.png b/samples/thumbnails/card-14.png
new file mode 100644
index 0000000..3602c00
--- /dev/null
+++ b/samples/thumbnails/card-14.png
diff --git a/samples/thumbnails/card-15.png b/samples/thumbnails/card-15.png
new file mode 100644
index 0000000..acab1bb
--- /dev/null
+++ b/samples/thumbnails/card-15.png
diff --git a/samples/thumbnails/card-16.png b/samples/thumbnails/card-16.png
new file mode 100644
index 0000000..fc363c2
--- /dev/null
+++ b/samples/thumbnails/card-16.png
diff --git a/samples/thumbnails/card-17.png b/samples/thumbnails/card-17.png
new file mode 100644
index 0000000..8c0213a
--- /dev/null
+++ b/samples/thumbnails/card-17.png
diff --git a/samples/thumbnails/game-basketball.png b/samples/thumbnails/game-basketball.png
new file mode 100644
index 0000000..ef8edc8
--- /dev/null
+++ b/samples/thumbnails/game-basketball.png
diff --git a/samples/thumbnails/game-continents.png b/samples/thumbnails/game-continents.png
new file mode 100644
index 0000000..b6fb8ac
--- /dev/null
+++ b/samples/thumbnails/game-continents.png
diff --git a/samples/thumbnails/game-find-boston.png b/samples/thumbnails/game-find-boston.png
new file mode 100644
index 0000000..7813b33
--- /dev/null
+++ b/samples/thumbnails/game-find-boston.png
diff --git a/samples/thumbnails/game-set.png b/samples/thumbnails/game-set.png
new file mode 100644
index 0000000..443224f
--- /dev/null
+++ b/samples/thumbnails/game-set.png
diff --git a/samples/thumbnails/game-shapes-and-colors.png b/samples/thumbnails/game-shapes-and-colors.png
new file mode 100644
index 0000000..b315ef8
--- /dev/null
+++ b/samples/thumbnails/game-shapes-and-colors.png
diff --git a/samples/thumbnails/game-spiralaterals.png b/samples/thumbnails/game-spiralaterals.png
new file mode 100644
index 0000000..7e6ffae
--- /dev/null
+++ b/samples/thumbnails/game-spiralaterals.png
diff --git a/samples/thumbnails/game-trianglepaint.png b/samples/thumbnails/game-trianglepaint.png
new file mode 100644
index 0000000..05c6158
--- /dev/null
+++ b/samples/thumbnails/game-trianglepaint.png
diff --git a/samples/thumbnails/graphics-bbq.png b/samples/thumbnails/graphics-bbq.png
new file mode 100644
index 0000000..eb56cd0
--- /dev/null
+++ b/samples/thumbnails/graphics-bbq.png
diff --git a/samples/thumbnails/graphics-birds.png b/samples/thumbnails/graphics-birds.png
new file mode 100644
index 0000000..7433d70
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diff --git a/samples/thumbnails/graphics-bubbles.png b/samples/thumbnails/graphics-bubbles.png
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diff --git a/samples/thumbnails/graphics-candyvortex.png b/samples/thumbnails/graphics-candyvortex.png
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diff --git a/samples/thumbnails/graphics-city.png b/samples/thumbnails/graphics-city.png
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diff --git a/samples/thumbnails/graphics-colors.png b/samples/thumbnails/graphics-colors.png
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diff --git a/samples/thumbnails/graphics-csquiral.png b/samples/thumbnails/graphics-csquiral.png
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diff --git a/samples/thumbnails/graphics-curls.png b/samples/thumbnails/graphics-curls.png
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diff --git a/samples/thumbnails/graphics-curlygates.png b/samples/thumbnails/graphics-curlygates.png
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diff --git a/samples/thumbnails/graphics-daimons.png b/samples/thumbnails/graphics-daimons.png
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diff --git a/samples/thumbnails/graphics-dalton.png b/samples/thumbnails/graphics-dalton.png
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diff --git a/samples/thumbnails/graphics-dots.png b/samples/thumbnails/graphics-dots.png
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diff --git a/samples/thumbnails/graphics-flower.png b/samples/thumbnails/graphics-flower.png
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+++ b/samples/thumbnails/graphics-flower.png
diff --git a/samples/thumbnails/graphics-fountain.png b/samples/thumbnails/graphics-fountain.png
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diff --git a/samples/thumbnails/graphics-op-art.png b/samples/thumbnails/graphics-op-art.png
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+++ b/samples/thumbnails/graphics-op-art.png
diff --git a/samples/thumbnails/graphics-palm.png b/samples/thumbnails/graphics-palm.png
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diff --git a/samples/thumbnails/graphics-rainbow.png b/samples/thumbnails/graphics-rainbow.png
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diff --git a/samples/thumbnails/graphics-redwisp.png b/samples/thumbnails/graphics-redwisp.png
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+++ b/samples/thumbnails/graphics-redwisp.png
diff --git a/samples/thumbnails/graphics-reflections.png b/samples/thumbnails/graphics-reflections.png
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+++ b/samples/thumbnails/graphics-reflections.png
diff --git a/samples/thumbnails/graphics-shades.png b/samples/thumbnails/graphics-shades.png
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+++ b/samples/thumbnails/graphics-shades.png
diff --git a/samples/thumbnails/graphics-smoothcandy.png b/samples/thumbnails/graphics-smoothcandy.png
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+++ b/samples/thumbnails/graphics-smoothcandy.png
diff --git a/samples/thumbnails/graphics-sunrise.png b/samples/thumbnails/graphics-sunrise.png
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+++ b/samples/thumbnails/graphics-sunrise.png
diff --git a/samples/thumbnails/graphics-turtles.png b/samples/thumbnails/graphics-turtles.png
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+++ b/samples/thumbnails/graphics-turtles.png
diff --git a/samples/thumbnails/graphics-xo-child.png b/samples/thumbnails/graphics-xo-child.png
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+++ b/samples/thumbnails/graphics-xo-child.png
diff --git a/samples/thumbnails/math-Pythagoras.png b/samples/thumbnails/math-Pythagoras.png
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diff --git a/samples/thumbnails/math-cherlin.png b/samples/thumbnails/math-cherlin.png
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+++ b/samples/thumbnails/math-cherlin.png
diff --git a/samples/thumbnails/math-dice.png b/samples/thumbnails/math-dice.png
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+++ b/samples/thumbnails/math-dice.png
diff --git a/samples/thumbnails/math-fractions.png b/samples/thumbnails/math-fractions.png
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+++ b/samples/thumbnails/math-fractions.png
diff --git a/samples/thumbnails/math-galton-path.png b/samples/thumbnails/math-galton-path.png
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+++ b/samples/thumbnails/math-galton-path.png
diff --git a/samples/thumbnails/math-geometry.png b/samples/thumbnails/math-geometry.png
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--- /dev/null
+++ b/samples/thumbnails/math-geometry.png
diff --git a/samples/thumbnails/math-heart-animation.png b/samples/thumbnails/math-heart-animation.png
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+++ b/samples/thumbnails/math-heart-animation.png
diff --git a/samples/thumbnails/math-heart.png b/samples/thumbnails/math-heart.png
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+++ b/samples/thumbnails/math-heart.png
diff --git a/samples/thumbnails/math-prime-factors.png b/samples/thumbnails/math-prime-factors.png
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+++ b/samples/thumbnails/math-prime-factors.png
diff --git a/samples/thumbnails/math-sierpquad.png b/samples/thumbnails/math-sierpquad.png
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+++ b/samples/thumbnails/math-sierpquad.png
diff --git a/samples/thumbnails/math-sierptri.png b/samples/thumbnails/math-sierptri.png
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+++ b/samples/thumbnails/math-sierptri.png
diff --git a/samples/thumbnails/math-snowflake.png b/samples/thumbnails/math-snowflake.png
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+++ b/samples/thumbnails/math-snowflake.png
diff --git a/samples/thumbnails/math-tangents.png b/samples/thumbnails/math-tangents.png
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+++ b/samples/thumbnails/math-tangents.png
diff --git a/samples/thumbnails/math-tree.png b/samples/thumbnails/math-tree.png
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+++ b/samples/thumbnails/math-tree.png
diff --git a/samples/thumbnails/media-scratch.png b/samples/thumbnails/media-scratch.png
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+++ b/samples/thumbnails/media-scratch.png
diff --git a/samples/thumbnails/sensors-graph.png b/samples/thumbnails/sensors-graph.png
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--- /dev/null
+++ b/samples/thumbnails/sensors-graph.png
diff --git a/samples/thumbnails/sensors-loudness-monitor.png b/samples/thumbnails/sensors-loudness-monitor.png
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--- /dev/null
+++ b/samples/thumbnails/sensors-loudness-monitor.png
diff --git a/samples/thumbnails/sensors-measure.png b/samples/thumbnails/sensors-measure.png
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+++ b/samples/thumbnails/sensors-measure.png
diff --git a/samples/thumbnails/sensors-psuedo-color.png b/samples/thumbnails/sensors-psuedo-color.png
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--- /dev/null
+++ b/samples/thumbnails/sensors-psuedo-color.png
diff --git a/samples/thumbnails/sensors-simple-paint.png b/samples/thumbnails/sensors-simple-paint.png
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index 0000000..b3d93e7
--- /dev/null
+++ b/samples/thumbnails/sensors-simple-paint.png
diff --git a/samples/thumbnails/sensors-soundpaint.png b/samples/thumbnails/sensors-soundpaint.png
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+++ b/samples/thumbnails/sensors-soundpaint.png
diff --git a/samples/thumbnails/sensors-spectrum-analyzer.png b/samples/thumbnails/sensors-spectrum-analyzer.png
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+++ b/samples/thumbnails/sensors-spectrum-analyzer.png
diff --git a/samples/thumbnails/sensors-valentine.png b/samples/thumbnails/sensors-valentine.png
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+++ b/samples/thumbnails/sensors-valentine.png