the \file macro is no longer a good example of where \e can't be used

Doc/doc/doc.tex

@@ -789,10 +789,11 @@ This \UNIX\ is also followed by a space.
     \end{macrodesc}
 
     \begin{macrodesc}{e}{}
-      Produces a backslash.  This is convenient in \macro{code} and
-      similar macros, and is only defined there.  To create a
-      backslash in ordinary text (such as the contents of the
-      \macro{file} macro), use the standard \macro{textbackslash} macro.
+      Produces a backslash.  This is convenient in \macro{code},
+      \macro{file}, and similar macros, and is only defined there.  To
+      create a backslash in ordinary text (such as the contents of the
+      \macro{citetitle} macro), use the standard \macro{textbackslash}
+      macro.
     \end{macrodesc}
 
     \begin{macrodesc}{email}{\p{address}}