define pyk of pc4 as text unicode start of text unicode small p unicode small c unicode four unicode end of text end unicode text end text end define
define statement of pc4 as pred calc infer all metavar var f end metavar indeed all metavar var g end metavar indeed metavar var f end metavar imply metavar var f end metavar lor metavar var g end metavar end define
define proof of pc4 as rule tactic end define
The pyk compiler, version 0.grue.20060417+ by Klaus Grue,