diff -r 6088dfd5f9c8 -r be1e25a62ec8 doc-src/Main/Docs/document/Main_Doc.tex
--- a/doc-src/Main/Docs/document/Main_Doc.tex	Mon Feb 08 15:54:01 2010 -0800
+++ b/doc-src/Main/Docs/document/Main_Doc.tex	Tue Feb 09 08:28:12 2010 +0100
@@ -308,7 +308,7 @@
 
 \section{Algebra}
 
-Theories \isa{OrderedGroup}, \isa{Ring{\isacharunderscore}and{\isacharunderscore}Field} and \isa{Divides} define a large collection of classes describing common algebraic
+Theories \isa{Groups}, \isa{Rings}, \isa{Fields} and \isa{Divides} define a large collection of classes describing common algebraic
 structures from semigroups up to fields. Everything is done in terms of
 overloaded operators: