string delim "\"" "\"" escape "\\"
-keyword = "match|with|naxiom|nlemma|ntheorem|nrecord|for|ninductive|ncoinductive|ndefinition|nlet|rec|corec|notation|interpretation|nqed|include"
+keyword = "match|with|in|naxiom|nlemma|ntheorem|nrecord|for|ninductive|ncoinductive|ndefinition|nlet|rec|corec|notation|interpretation|nqed|include"
comment delim "(*" "*)" multiline nested