1.3 alpha 2 [+] full custom script support [+] support for multiple versions of Perimeter installed at the same time [] fixed detection of the new image formats, which was broken [] improved handling of 16-bit heightmaps
1.2.1 [+] Compatibility with Perimeter: Emperor's Testament
1.2 [+] support of 16-bit heightmaps [+] support of image file formats "png", "tiff", and "tga" [] some interface changes [] updated About dialog [-] the inability to use the program because of graphics-related problems fixed [-] some About dialog glitches fixed
1.1 [] fully rewritten internal architecture, providing better stability, responsiveness, and performance [] numerous UI fixes [*] revamped About dialog [+] custom zero layers [+] custom hardness maps [+] custom sky textures [+] custom levelled surface textures [+] project settings
1.01 [-] detection fix for Codemasters' Perimeter version