Convert LaTeX support to create a new class of documents.  HTML generation
now requires LaTeX2HTML 98.1p1 or newer (& and is still in progress).

This means that doing things to change the formatting of the manuals (at the
"normal user" level, like A4 paper), can happen in just one place, rather
than in each document file.
diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex
index 0d1ccef..62c405e 100644
--- a/Doc/tut/tut.tex
+++ b/Doc/tut/tut.tex
@@ -1,5 +1,4 @@
-\documentclass[twoside,openright]{report}
-\usepackage{myformat}
+\documentclass{manual}
 
 % Things to do:
 % Add a section on file I/O