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-rwxr-xr-xdoc/README.variables4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/README.variables b/doc/README.variables
index 4195f299b..d923ece7b 100755
--- a/doc/README.variables
+++ b/doc/README.variables
@@ -486,3 +486,7 @@ ${CDR(userfield)} The channels uses specified field.
In addition, you can set your own extra variables with a traditional
SetVAR(CDR(var)=val) to anything you want.
+
+Certain functional variables may be accessed with $(foo <args>). A list
+of these functional variables may be found by typing "show functions"
+at the Asterisk CLI.