diff --git a/Docs/src/sections.but b/Docs/src/sections.but
index 49053059..0edaf60b 100644
--- a/Docs/src/sections.but
+++ b/Docs/src/sections.but
@@ -18,7 +18,7 @@ Tells the installer that the current section needs an additional "size_kb" kilob
 
 \S2{ssection} Section
 
-\c [/e] [section_name] [section index output]
+\c [/e] [[!]section_name] [section index output]
 
 Begins and opens a new section. If section_name is empty, omitted, or begins with a -, then it is a required section and the user will not see it, nor have the option of disabling it. If the section name is 'Uninstall', then it is a special Uninstall Section. If section index output is specified, the parameter will be !defined with the section index (that can be used for \R{sectionsettext}{SectionSetText} etc). If the section name begins with a !, the section will be displayed as bold. If /e is present, the sub sections of the section will be expanded by default.