.TH PTI 1 2/24/79 .UC .SH NAME pti \- phototypesetter interpreter .SH SYNOPSIS .B pti [ file ... ] .SH DESCRIPTION .I Pti shows the commands in a stream from the standard output of .IR troff (1) using .I troff's .B \-t option, interpreting them as they would act on the typesetter. Horizontal motions shows as counts in internal units and are marked with `<' and `>' indicating left and right motion. Vertical space is called .I lead and is also indicated. .SH SEE ALSO troff(1) .SH BUGS Too cryptic for normal users, who should use ``troff \-a ...''.