+(defcustom nameless-separator "-"
+ "Separator used between package prefix and rest of symbol.
+The separator is hidden along with the package name. For
+instance, setting it to \"/\" means that `init/bio' will be
+displayed as `:bio' (assuming `nameless-current-name' is
+\"init\"). The default is \"-\", since this is the
+separator recommended by the Elisp manual.
+
+Value can also be nil, in which case the separator is never hidden."
+ :type '(choice string (constant nil)))
+