BRYCE beginner!

I just got Bryce and experimented with it a bit!
I found that there are loads of cool things which could be done by using this softawre for creating landscapes but…
There is a question - is there any way to port heightfields created on Bryce into OpenGL. I tried to save heightmaps as bitmap but couldn’t do it.

What is the file format for bryce?

Well! there are many formats you can save like AutoCAD, Lightwave, HF etc… but I could not find any simple one like eg. bmp (bitmap)???

Someone just advised me to use printscreen and crop selected area. it works ok!! but I am still curious how to do it in BRYCE???