; pos=yes warn=0 ; tests length units, also test begin/end saving/restoring units *fix 1 0 0 0 *units tape metres 1 2 10.00 0 00 *begin *units tape feet 2 3 10.00 0 00 *end 3 4 10.00 0 00 *units tape 3 feet 4 5 10.00 0 00