How to write RGB Tiffs from scripts?

1. map your 3D or 4D multichannel image to a 2D multichannel 2D image, for instance with the slice or miniMIP commands.
2. use chan2rgba to map that image to a 2D packed 4channel (RGBA) image of bytes. The chan2rgba command has a lot of options to manipulate contrast, colour and gamma. Syntax:

   source chan2rgba -> dest

3. use the -type tiffrgb option to the save command, for example:

   foo save foo.tif -type tiffrgb