write_lut — Write look-up-table (lut) as file.
write_lut is obsolete and is only provided for
reasons of backward compatibility.
write_lut saves the look-up-table (resp. the part of it that
is relevant for displaying image gray values) of the valid output
window into a file named '
FileName.lut'. It can be read again
write_lut is only suitable for systems using 256 colors.
File name (of file containing the look-up-table).
Default value: '/tmp/lut'
File extension: .
write_lut returns TRUE if the window with the required
properties (256 colors) is valid and the parameter (file name) is
correct. Otherwise an exception is raised.