path: root/Docs/02-layout
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diff --git a/Docs/02-layout b/Docs/02-layout
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+++ b/Docs/02-layout
@@ -29,3 +29,19 @@ to a new width. Coordinates in the box tree are relative to the position of the
parent node.
The box tree can then be rendered using each node's coordinates.
+Absolute positioning
+Absolutely positioned boxes are constructed in the box tree in the same place as
+if they were not absolutely positioned. Inline boxes are created as
+INLINE_BLOCK, tables as TABLE, and other boxes as BLOCK (see
+During layout, absolutely positioned boxes in block context (BLOCK or TABLE) are
+given a position in layout_block_context(), but treated as having no height. In
+inline context (INLINE_BLOCK), they are given a position in layout_line(), but
+treated as having no width or height. This is done to determine the static
+An additional pass after main layout positions and layouts all absolutely
+positioned boxes (see layout_position_absolute()).