%
% specification for simple graphics interaction
%

specification((
+(((stop,keep((red,not(start)));start,keep((green,not(stop)))))),
% []((red,not(green);not(red),green)),
% []((green->move)),
[]((red->not(move))),
% [](move),
halt(quit)
% length(10)
)).

st_variables([stop,start,quit],[red,gree,move]).