diff -r d9a54c4c9da9 -r 3cc73d00553c etc/symbols
--- a/etc/symbols	Sat Nov 28 20:18:29 2020 +0100
+++ b/etc/symbols	Sat Nov 28 21:56:24 2020 +0100
@@ -432,6 +432,7 @@
 \<^term>                argument: cartouche
 \<^theory>              argument: cartouche
 \<^theory_context>      argument: cartouche
+\<^tool>                argument: cartouche
 \<^typ>                 argument: cartouche
 \<^type_abbrev>         argument: cartouche
 \<^type_name>           argument: cartouche