iopen(???) arguments undocumented

[karron at MCIRPS2.MED.NYU.EDU]

Is there a man page for iopen ?

What are the arguments for iopen, and what do they mean?

I am using Paul Haberli's imgutils, but they are not of much
utility without some minimal clues as to what to do with them.
The source code is nice, but a few words of help would save me
days of experimentation.

What is the macro RLE(1) mean ? Why the arguments ? What is bpp mean ?
how are the xdim,ydim,zdim scaled ? from 0 or from 1 ?

dan.
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