VISIT simple.lean
WAIT
INFO 4
REPLACE 4
definition foo {A B : Type} (a : A) (b : B) := b
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INFO 4
INSERT 4

WAIT
INFO 5
REMOVE 4
WAIT
INFO 4
REPLACE 4
defition foo {A B : Type} (a : A) (b : B) := b
WAIT
REPLACE 4
definition foo {A B : Type} (a : A) (b : B) := b
WAIT
INFO 4