totiff wanted: sgi image <-> tiff format converter

[doelz at urz.unibas.ch]

This is a question which is presumably adressed somewhere in netland already. 
After having seen 'tomac' and 'frommac' from Paul Haeberli, I wanted to 
have grey-shaded IRIX screen dumps in my word, pagemaker etc. document. 
Unfortunately, tomac is very restricted ( at least I couldn't make it 
produce more than one bit plane , i.e. black/white). 

Is there any totiff / fromtiff around ? 

Merci 
Reinhard 

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