The Common Graphics Environment for PEX 5.1 is a set of PEX 5.1 extensions developed by the Common Open Software Environment vendors, including HP, IBM and Sun to provide support for texture mapping, basic anti-aliasing, and transparency. The compressed ASCII file CGE-PEX-5.1-Spec.txt.Z, with the modifications to it described in compressed ASCII file CGE-PEX-51-Spec-mods.txt.Z, define the complete specification of the Common Graphics Environment for PEX 5.1. The specification is considered stable as of 3/1/94. The only possible additions to CGE-PEX-51-Spec-mods.txt.Z after 3/1/94 will be clarifications. General information or questions about this specification should be directed to cge-pex-51@hpgtdadm.fc.hp.com.