Do the right stuff to convert what was originally \e, \ldots, and ---
in the LaTeX sources.
diff --git a/Doc/tools/sgmlconv/fixgenents.sh b/Doc/tools/sgmlconv/fixgenents.sh
index 220e356..8d5f121 100755
--- a/Doc/tools/sgmlconv/fixgenents.sh
+++ b/Doc/tools/sgmlconv/fixgenents.sh
@@ -22,4 +22,7 @@
 s|<NULL/>|\&NULL;|g
 s|<POSIX/>|\&POSIX;|g
 s|<UNIX/>|\&UNIX;|g
+s|<e/>|\&bsol;|g
+s|<ldots/>|\&hellip|g
+s|---|\&mdash;|g
 ' || exit $?