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+# $EPIC: umask.txt,v 1.2 2006/08/20 17:37:08 sthalik Exp $
+======Synopsis:======
+$__umask__(<mask>)
+======Technical:======
+This function sets the default file umask used when creating and writing
+files with EPIC's builtin file functions.  The umask sets the permission
+bits to block when writing.  Essentially, the resultant permission bits
+would be the default minus the umask.
+======Practical:======
+This function is used to set the default file permissions.  The $[[chmod]]()
+function is affected by it.
+======Returns:======
+previous umask, or nothing if no new umask is given
+======Examples:======
+<file>
+$umask(77)                 sets default permissions to 700
+$umask(2)                  sets default permissions to 775
+$umask()                   error, no mask, returns nothing
+</file>