(Overview of Markers): Mention that, if a marker is used a a position,

its buffer is ignored.

diff --git a/lispref/markers.texi b/lispref/markers.texi
index eb576f235cd8440f404d034d7293be7433cbb8ca..e844912002e23a0a9d7e9c4826f1874d131f0ddd 100644 (file)
--- a/lispref/markers.texi
+++ b/lispref/markers.texi
@@ -28,10 +28,13 @@ deleted, so that it stays with the two characters on either side of it.
 @node Overview of Markers
 @section Overview of Markers
 
-  A marker specifies a buffer and a position in that buffer.  The marker
-can be used to represent a position in the functions that require one,
-just as an integer could be used.  @xref{Positions}, for a complete
-description of positions.
+  A marker specifies a buffer and a position in that buffer.  The
+marker can be used to represent a position in the functions that
+require one, just as an integer could be used.  In that case, the
+marker's buffer is normally ignored.  Of course, a marker used in this
+way usually points to a position in the buffer that the function
+operates on, but that is entirely the programmer's responsibility.
+@xref{Positions}, for a complete description of positions.
 
   A marker has two attributes: the marker position, and the marker
 buffer.  The marker position is an integer that is equivalent (at a