1997-05-27 paulson 1997-05-27 Removal of module Mask and datatype binding with its constructor |->
1997-05-26 paulson 1997-05-26 More de-HOL-ification
1997-05-22 paulson 1997-05-22 New headers and other minor changes
1997-05-20 paulson 1997-05-20 Removal of redundant code (unused or already present in Isabelle. This eliminates HOL compatibility but makes the code smaller and more readable
1997-05-15 paulson 1997-05-15 TFL now integrated with HOL (more work needed)
1996-10-18 paulson 1996-10-18 Konrad Slind's TFL