diff -r f321d21b9a6b -r aed0a0450797 doc-src/TutorialI/Inductive/advanced-examples.tex
--- a/doc-src/TutorialI/Inductive/advanced-examples.tex	Fri Jan 12 18:00:12 2001 +0100
+++ b/doc-src/TutorialI/Inductive/advanced-examples.tex	Fri Jan 12 18:00:40 2001 +0100
@@ -28,7 +28,8 @@
 over sets.  It returns 
 the set of ground terms that can be formed over a set \isa{F} of function symbols. For
 example,  we could consider the set of ground terms formed from the finite 
-set {\isa{\{Number 2, UnaryMinus, Plus\}}}.
+set \isa{\isacharbraceleft Number 2, UnaryMinus,
+Plus\isacharbraceright}.
 
 This concept is inductive. If we have a list \isa{args} of ground terms 
 over~\isa{F} and a function symbol \isa{f} in \isa{F}, then we