Introduction to PEXlib Data Structures PEXlib Access and Information Functions Programming Interfaces for Generating OCs OC Context Functions Primitives and Attribute Binding Output Primitive Functions Output Attribute Functions Structure Control and Miscellaneous Functions Lookup Tables Pipeline Contexts Renderers Renderer Picking Structures Name Sets Texture Mapping Accumulation Buffers Spatial Searches PHIGS Workstation PHIGS Workstation Picking PEX Fonts PEX Escapes Output Command Encode and Decode Sending Encoded Output Commands PEXlib Utilities PEXlib Programming and PEX Protocol Levels Acknowledgements