diff --git a/man/cagebreak-config.5.md b/man/cagebreak-config.5.md
index 6bc8510..a084cd0 100644
--- a/man/cagebreak-config.5.md
+++ b/man/cagebreak-config.5.md
@@ -17,6 +17,10 @@ are parsed sequentially but independently from the rest of the file.
 
 Each line starting with a "#" is a comment.
 
+Note that nesting of commands is limited to 50 times, though lines
+are arbitrarily long in practice, though a reasonable limit of 4Mb has
+been set.
+
 See *KEY DEFINITIONS* for details on modifier keys and *MODES* for details
 on modes.