* POV-Ray executable browse file dialog
* the rest of the exports + imports (PGM, OCT, AutoCAD, GdkPixbuf)
* Update terraform spec
* Update docs, supply them as Help
* xmlGetContent calls are possibly leaking memory
* Popup an export warning box when saving to a non-native format
* Finish native render, pull better stuff from GIMP plug-in
* Add legend to contour print output
* Print Preview doesn't work right?
* turn Tree .c code into a POV-Ray macro and include it with Terraform
* Support macros for Place Objects
* MFD flowmap code not working???
* OpenGL render
