--- a/src/FOLP/ex/Intro.thy Fri Jan 04 21:49:06 2019 +0100
+++ b/src/FOLP/ex/Intro.thy Fri Jan 04 23:22:53 2019 +0100
@@ -45,13 +45,13 @@
schematic_goal "?p : (EX y. ALL x. J(y,x) <-> ~J(x,x))
--> ~ (ALL x. EX y. ALL z. J(z,y) <-> ~ J(z,x))"
-apply (tactic \<open>fast_tac @{context} FOLP_cs 1\<close>)
+apply (tactic \<open>fast_tac \<^context> FOLP_cs 1\<close>)
done
schematic_goal "?p : ALL x. P(x,f(x)) <->
(EX y. (ALL z. P(z,y) --> P(z,f(x))) & P(x,y))"
-apply (tactic \<open>fast_tac @{context} FOLP_cs 1\<close>)
+apply (tactic \<open>fast_tac \<^context> FOLP_cs 1\<close>)
done