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src/HOL/IMP/Collecting1.thy
changeset 69597 ff784d5a5bfb
parent 68778 4566bac4517d 
--- a/src/HOL/IMP/Collecting1.thy	Sat Jan 05 17:00:43 2019 +0100
+++ b/src/HOL/IMP/Collecting1.thy	Sat Jan 05 17:24:33 2019 +0100
@@ -5,7 +5,7 @@
 begin
 
 text\<open>The idea: the state is propagated through the annotated command as an
-annotation @{term "{s}"}, all other annotations are @{term "{}"}. It is easy
+annotation \<^term>\<open>{s}\<close>, all other annotations are \<^term>\<open>{}\<close>. It is easy
 to show that this semantics approximates the collecting semantics.\<close>
 
 lemma step_preserves_le:
isabelle