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gtf - calculate VESA GTF mode lines 
gtf h-resolution v-resolution
refresh [-v|--verbose] [-f|--fbmode] [-x|--xf86mode] 
Gtf is a utility for
calculating VESA GTF modes.  Given the desired horizontal and vertical resolutions
and refresh rate (in Hz), the parameters for a matching VESA GTF mode are
printed out.  Two output formats are supported: mode lines suitable for
the XFree86 XF86Config(5)
 file, and mode parameters suitable for the Linux
fbset(8)
 utility. 
 
- -v|--verbose 
- Enable verbose printouts  This shows
a trace for each step of the computation. 
- -x|--xf86mode 
- Print the mode parameters
as XFree86-style mode lines.  This is the default format. 
- -f|--fbset 
- Print the
mode parameters in a format suitable for fbset(8)
. 
XF86Config(5)
Andy Ritger.
This program is based on the Generalized Timing Formula
(GTF(TM)) Standard Version: 1.0, Revsion: 1.0.  The GTF Excel(TM) spreadsheet,
a sample (and the definitive) implementation of the GTF Timing Standard
is available at <ftp://ftp.vesa.org/pub/GTF/VTF_V1R1.xls>. 
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