1 files changed, 1052 insertions, 0 deletions
diff --git a/doc/guides/prog_guide/img/malloc_heap.svg b/doc/guides/prog_guide/img/malloc_heap.svg
new file mode 100644
index 00000000..d6bcc848
--- /dev/null
+++ b/doc/guides/prog_guide/img/malloc_heap.svg
@@ -0,0 +1,1052 @@
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+    <text
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+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+       id="text10506-2-9-0"
+       sodipodi:linespacing="120%"><tspan
+         sodipodi:role="line"
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+         x="49.218113"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas">prev</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+       id="text10506-2-6-0"
+       sodipodi:linespacing="120%"><tspan
+         sodipodi:role="line"
+         id="tspan10508-1-8-06"
+         x="690.51538"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas">Dummy Elements:</tspan><tspan
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+         x="690.51538"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas"
+         id="tspan13581">Size = 0</tspan><tspan
+         sodipodi:role="line"
+         x="690.51538"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas"
+         id="tspan13583">State = BUSY</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+       id="text10506-2-3-1-6"
+       sodipodi:linespacing="120%"><tspan
+         sodipodi:role="line"
+         id="tspan10508-1-34-1-0"
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+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+       id="text10506-2-6-6"
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+         sodipodi:role="line"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas"
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+         x="429.11118"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas"
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+         id="tspan13715">size = &lt;size&gt;</tspan><tspan
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+         x="429.11118"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas"
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+         sodipodi:role="line"
+         id="tspan10508-1-8-7-9-3"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas">size</tspan></text>
+    <text
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+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+       id="text10506-2-3-1-6-8"
+       sodipodi:linespacing="120%"><tspan
+         sodipodi:role="line"
+         id="tspan10508-1-34-1-0-4"
+         x="505.86865"
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+    <text
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+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+       id="text10506-2-6-6-0"
+       sodipodi:linespacing="120%"><tspan
+         sodipodi:role="line"
+         x="660.39099"
+         y="449.92532"
+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas"
+         id="tspan14527">Pad element header:</tspan><tspan
+         sodipodi:role="line"
+         x="660.39099"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas"
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+         style="font-size:16px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:120.00000477%;writing-mode:lr-tb;text-anchor:start;font-family:Consolas;-inkscape-font-specification:Consolas"
+         id="tspan14533">pad = padsize</tspan></text>
+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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+       id="text10506-2-3-1-6-8-7"
+       sodipodi:linespacing="120%"><tspan
+         sodipodi:role="line"
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+    <text
+       xml:space="preserve"
+       style="font-size:40px;font-style:normal;font-weight:normal;line-height:120.00000477%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;display:inline;font-family:Sans"
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