The keyboard is based on the Khmer OS and NiDA keyboard and edited with Microsoft Keyboard Layout Editor (a free download).
Also this release supports Mac OS X and 64-bit Windows systems as well as 32-bit (for those of you who had trouble installing Khmer Unicode on a 64-bit system this keyboard installer should make it work). We added a colon symbol (“:” with right ALT+L or OPTION+L on Mac) as well as a dash (“-” with right ALT+D or OPTION +D on Mac). This keyboard includes some additions that we felt were needed so we didn’t have to switch between an English keyboard to get certain symbols.