Added x∣S→x≤S-ah₁ (PCF version).
Added x∣S→x≤S-ah₁ (PCF version).

Ignore-this: 692a6f2824cf447189a28eb84d3b84e8

darcs-hash:20100603031930-3bd4e-87846c88094f80c6d4bffd0d52bea3b9ed351bc5.gz

asr/fotc,asr/fotc