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-rw-r--r--docs/ref/templates/builtins.txt5
1 files changed, 3 insertions, 2 deletions
diff --git a/docs/ref/templates/builtins.txt b/docs/ref/templates/builtins.txt
index 24ad8c433d..2e55b66d04 100644
--- a/docs/ref/templates/builtins.txt
+++ b/docs/ref/templates/builtins.txt
@@ -261,8 +261,9 @@ Sample usage::
``firstof``
-----------
-Outputs the first argument variable that is not ``False``. Outputs nothing if
-all the passed variables are ``False``.
+Outputs the first argument variable that is not "false" (i.e. exists, is not
+empty, is not a false boolean value, and is not a zero numeric value). Outputs
+nothing if all the passed variables are "false".
Sample usage::