This section presents an overview of the CALS standards including their purpose, current status, and implementation issues. It concentrates notably on:
· Digital Representation for Communication of Product Data: IGES Application subset.
· Markup requirements and Generic Style Specification for Electronic Printed Output and exchange of text (SGML).
· Hypermedia Time-based document structuring language (Hytime)
· Digital Representation for Communication of Illustration Data: CGM Application profiles.
· Standards for the exchange of product model data (STEP).
