These exercises cover the use of path in a shape.
startshape MyShape
path Line1 {
MOVETO {x 0 y 0}
LINETO {x 1 y 1}
STROKE {width .01}
}
rule MyShape {
Line1 {}
}

startshape MyShape
path Line1 {
MOVETO {x 0 y 0}
LINETO {x 1 y 1}
LINETO {x 0 y 1}
LINETO {x 1 y 0}
LINETO {x 0 y 0}
STROKE {width .01}
}
rule MyShape {
Line1 {}
}

startshape MyShape
path Line1 {
MOVETO {x 0 y 0}
LINETO {x 1 y 0}
STROKE {width .01}
}
rule MyShape {
Line1 {r 25}
}
