-@samp{-}, @samp{?},
-etc). @var{exp-button-function} is the function to call if it's clicked
-on. Button types are @code{'bracket}, @code{'angle}, @code{'curly},
-@code{'expandtag}, @code{'statictag}, or nil. @var{exp-button-data} is
-extra data attached to the text forming the expansion button.
+@samp{-}, @samp{?}, etc). @var{exp-button-function} is the function
+to call if it's clicked on. Button types are @code{'bracket},
+@code{'angle}, @code{'curly}, @code{'expandtag}, @code{'statictag}, or
+@code{nil}. @var{exp-button-data} is extra data attached to the text
+forming the expansion button.