what is the meaning of the + in an ls -l ?

[Mike Schmidt]

I have noticed that in many cases when listing files with ls there is a
+ at the end of the permissions. What does this mean? It seems to be
related to some problems I am having with file access from windows
programs after the files have been modified by emacs in a cygwin session.

example:

-rwx------+ 1 user1           Aucun  3063892 Jan 20  2009 agent.exe
-rwx------  1 user1           Aucun      821 Aug 13 02:16 config.xml
-rwx------+ 1 user1           Aucun      569 Jan 20  2009 config.xml~



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