This type specifies the format of the file you are sending to the daemon or how the file is to be printed by the daemon and is used in the TIdLPRControlFile.FileFormat property. This can be one of the following values:
ffCIF - CalTech Intermediate Form
ffDVI - DVI (TeX output)
ffFormattedText - add formatting as needed to text file
ffPlot - Berkeley Unix plot library
ffControlCharText - text file with control characters
ffDitroff - ditroff output
ffPostScript - Postscript output file (.PS)
ffPR - 'pr' format
ffFORTRAM - FORTRAN carriage control
ffTroff - Troff output
ffSunRaster - Sun raster format file (.RAS, .RAST, .SUN, .SR, .SCR)