31 Markers

A marker is a Lisp object used to specify a position in a buffer relative to the surrounding text. A marker changes its offset from the beginning of the buffer automatically whenever text is inserted or deleted, so that it stays with the two characters on either side of it.

• Overview of Markers		The components of a marker, and how it relocates.
• Predicates on Markers		Testing whether an object is a marker.
• Creating Markers		Making empty markers or markers at certain places.
• Information from Markers		Finding the marker’s buffer or character position.
• Marker Insertion Types		Two ways a marker can relocate when you insert where it points.
• Moving Markers		Moving the marker to a new buffer or position.
• The Mark		How the mark is implemented with a marker.
• The Region		How to access the region.