.TH CAT 4 .SH NAME cat \- phototypesetter interface .SH DESCRIPTION .I Cat provides the interface to a Graphic Systems C/A/T phototypesetter. Bytes written on the file specify font, size, and other control information as well as the characters to be flashed. The coding will not be described here. .PP Only one process may have this file open at a time. It is write-only. .SH FILES /dev/cat .SH "SEE ALSO" troff(1) .br Phototypesetter interface specification