.TH xwdtohdf 1 
.SH NAME
xwdtohdf \- convert an XWD image to an HDF file format.
.SH SYNOPSIS
.B xwdtohdf
[infile|-] hdffile
.SH DESCRIPTION
.I Xwdtohdf
converts an XWD image to an HDF image.  This is mostly useful for
moving screen images to HDF files for permanent storage and later use with
NCSA or other HDF software.
.br
.SH ARGUMENTS
.TP 8
.B infile or \-
The input Xwd image.  You may use a filename, or \- to use stdin.
.TP 
.B hdffile
This argument must be present.  You may not use stdout.  This is an NCSA HDF
limitation.
.SH SEE ALSO
hdftoxwd(1), paltohdf(1), xwdtotek4693(1) 
.SH BUGS
You bet.  Mail to olsen@msc2.tn.cornell.edu.
.SH REQUIREMENTS
The NCSA HDF library should be present on your system.
.SH ACKNOWLEDGMENTS
Thanks to NCSA for providing the HDF file specifications, and the Unix
C code needed to manipulate them.  Thanks to Jef Poskanzer for
inspirations and code segments for X Window Dump read/write routines
in his package PBMPLUS.
.SH AUTHOR 
Dave Olsen