SC_FOLDACTION_CONTRACT_EVERY_LEVEL.
Avoid processing lines multiple times.

Fix documentation to use correct ID attribute.

history. Tweak size of INDIC_POINT and INDIC_POINTCHARACTER. Let translucency of
INDIC_COMPOSITIONTHICK be adjusted.

in the margin or in the text.

it can differ between screen and print.
Add GetSelectionHidden to allow testing of HideSelection.

by always allocating for every line.

mode so note that in documentation.

SCI_GETTEXTRANGEFULL, SCI_FINDTEXTFULL, and SCI_FORMATRANGEFULL.