define pyk of vars star var x end vars as text unicode start of text unicode small v unicode small a unicode small r unicode small s unicode space unicode small s unicode small t unicode small a unicode small r unicode space unicode asterisk unicode space unicode small e unicode small n unicode small d unicode space unicode small v unicode small a unicode small r unicode small s unicode end of text end unicode text end text end define
define tex of vars star var x end vars as text unicode start of text unicode newline unicode small v unicode small a unicode small r unicode small s unicode circumflex unicode asterisk unicode left parenthesis unicode space unicode number sign unicode one unicode period unicode newline unicode right parenthesis unicode end of text end unicode text end text end define
define value of vars star var x end vars as tagged if var x then the empty set else vars var x head end vars term union vars star var x tail end vars end if end define
The pyk compiler, version 0.grue.20050502 by Klaus Grue,