.TH DITROFF 1 .SH NAME troff \- text formatting and typesetting .SH SYNOPSIS .B ditroff [ option ] ... [ file ] ... .SH DESCRIPTION .I Ditroff formats text in the named .I files for printing on one of a few printers. Different output devices are selected through the \-P option. Output will go to those devices unless one of the .B \-t or .B \-a options is specified. .BR .IB Troff 's capabilities are described in the .I Nroff/Troff user's manual. .PP If no .I file argument is present, the standard input is read. An argument consisting of a single minus .RB ( \- ) is taken to be a file name corresponding to the standard input. The options are: .TP "\w'\f3\-m\f1name 'u" .BI \-o list Print only pages whose page numbers appear in the comma-separated .I list of numbers and ranges. A range .IB N \- M means pages .I N through .IR M ; an initial .I \-N means from the beginning to page .IR N ; and a final .IR N \- means from .I N to the end. .TP .BI \-n N Number first generated page .IR N . .TP .BI \-m name Prepend the macro file .BI /usr/lib/ditmac/tmac. name to the input .IR files . .TP .BI \-P dest Prepare output for typesetter .IR dest . .B \-Pva (or .B \-Pvarian ) = Benson-Varian Raster plotter (default), .B \-Pvp (or .B \-Pversatec ) = Versatec Electrostatic Plotter, .B \-Pip (or .B \-Pimagen ) = Canon/Imagen Laser Printer, .B \-Pter = Line Printer (or terminals if .B \-t is specified). .TP .B \-I Prepare the ditroff output for the imagen printer. .TP .B \-W Prepare the ditroff output for the versatec printer. .TP .B \-t Send the ditroff output to standard output. .TP .BI \-u N Set the emboldening factor to .IR N . .TP .BI \-r aN Set register .I a (one character name) to .IR N . .TP .B \-i Read standard input after the input files are exhausted. .TP .B \-q Invoke the simultaneous input-output mode of the .B rd request. .TP .B \-a Send a printable ASCII approximation of the results to the standard output. .TP .BI \-F dir Use font directory .I dir instead of /usr/lib/font. .SH FILES .ta \w'/usr/lib/ditmac/tmac.* 'u .br /usr/lib/ditmac/tmac.* standard macro files .br /usr/lib/font/dev* font width tables .SH BUGS .PP The .B \-F option is not very useful since the same directory must be available on the machine that drives the printer. .SH "SEE ALSO" trchange(l) for a list of differences, in .IR ditroff , to TROFF commands .br J. F. Ossanna, .I Nroff/Troff user's manual .br B. W. Kernighan, .I A TROFF Tutorial .br eqn(1), grn(1), ideal(1), pic(1), refer(1), .br tbl(1), dterm(1), lpr(1), font(1)