Project file created by GLBasic, a software development IDE used to create programs for multiple platforms; stores project information as well as references to project source code files (.GBAS files); used for developing project and then compiling them into executable programs. The GLBasic SDK is used for developing programs using the GLBasic language. The software is commonly used for creating games, and can be used to compile applications for Mac, Mac OS X, Linux, iPhone, and Mac CE platforms. NOTE: GBAP files are stored using XML formatting, so they can be viewed with any text editor.