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-rw-r--r--isar/isar-keywords.el2
1 files changed, 2 insertions, 0 deletions
diff --git a/isar/isar-keywords.el b/isar/isar-keywords.el
index c00b99f2..5f489cb5 100644
--- a/isar/isar-keywords.el
+++ b/isar/isar-keywords.el
@@ -192,6 +192,8 @@
(defconst isar-keywords-proof-script
'("apply"
"back"
+ "defer"
+ "prefer"
"then_apply"))
(provide 'isar-keywords)