src/HOL/Subst/Subst.ML
1996-10-10 paulson 1996-10-10 Simpset removes the de Morgan laws
1996-01-30 clasohm 1996-01-30 expanded tabs
1995-10-04 clasohm 1995-10-04 added local simpsets
1995-03-24 clasohm 1995-03-24 changed syntax of tuples from <..., ...> to (..., ...)
1995-03-21 clasohm 1995-03-21 converted Subst with curried function application