Substracts from the existing indentation of paragraphs intersecting the specified document span by the specified amount. If paragraphs are part of a list then changes their list levels instead.
Parameters
- intersectSpan
- Paragraphs intersecting this document span are affected.
- amount
- Amount by which to decrease indentation of paragraphs. If null then outdents to previous tab stop. Note that if the paragraphs are part of a list then this value is ignored and instead paragraphs' list level values are increased.
- firstLineOnly
- If true then outdents only the first line. If false then outdents the whole paragraph. If null then it enulates the user interface behavior of outdenting either the first line or the paragraph depending on the value of the intersectSpan where if it's a zero length span with the start value that points to the beginning of the paragraph then it will outdent the first line, otherwise the whole paragraph.
Return Value
True if operation indented or outdented one or more paragraphs. False if operation was a NOOP which can be when the paragraph's current indentation is at a point where it cannot be indented/outdented.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2