From 83b631a183c1df4233438459cb3386b715e4f2b3 Mon Sep 17 00:00:00 2001
From: jvoisin
Date: Sun, 29 Nov 2020 17:16:42 +0100
Subject: Document the `>` operator

---
 doc/source/config.rst | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'doc/source')

diff --git a/doc/source/config.rst b/doc/source/config.rst
index 91e085c..dd30723 100644
--- a/doc/source/config.rst
+++ b/doc/source/config.rst
@@ -327,7 +327,10 @@ The ``function`` filter is able to do various dereferencing:
 - ``function("AwesomeClass::my_method")`` will match the method ``my_method`` in the class ``AwesomeClass``
 - ``function("AwesomeNamespace\\my_function")`` will match the function ``my_function`` in the namespace ``AwesomeNamespace``
 
-The ``param`` filter is also able to do some dereferencing:
+It's also able to have calltrace constrains: ``function(func1>func2)`` will
+match only if ``func2`` is called **inside** of ``func1``.
+
+The ``param`` filter is able to do some dereferencing as well:
 
 - ``param($foo[bar])`` will get a match on the value corresponding to the ``bar`` key in the hashtable ``foo``.
   Remember that in PHP, almost every data structure is a hashtable. You can of course nest this like
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