Index: doc/variable.man.inc
===================================================================
diff -u -r8f64a468d8bb53f2ba317c8c738c2d3a24243980 -rfc11b2380eef48346410636908936e9468c74807
--- doc/variable.man.inc	(.../variable.man.inc)	(revision 8f64a468d8bb53f2ba317c8c738c2d3a24243980)
+++ doc/variable.man.inc	(.../variable.man.inc)	(revision fc11b2380eef48346410636908936e9468c74807)
@@ -18,10 +18,13 @@
 
 [para] 
 
-If [option "-accessor"] is set explicitly, a [term variable] will provide for a pair of
-getter and setter methods:
+If [option "-accessor"] is set explicitly, a [term variable] will
+provide for getter and setter methods:
 
 [list_begin definitions]
+[def "[arg obj] [arg variableName] [method exists]"]
+Returns 1 if the value store of [arg variableName] (e.g., an object
+variable) exists and has been given a value, returns 0 otherwise.
 [def "[arg obj] [arg variableName] [method set] [arg varValue]"]
 Sets [arg variableName] to [arg varValue].
 [def "[arg obj] [arg variableName] [method get]"]