1 Introduction
2 ACSIS File Format
3 GSD File Format
4 ACSIS NDF Extension
5 JCMTSTATE NDF Extension
6 FITS headers
 6.1 Telescope Specific
 6.2 OMP and ORAC-DR Specific
 6.3 Observation, Date and Pointing Specific
 6.4 Integration Time Specific
 6.5 ACSIS Specific
 6.6 Front End Specific
 6.7 Environment Specific
 6.8 Switching and Mapping Details
 6.9 Secondary Mirror Specific
 6.10 JOS Parameters
 6.11 Miscellaneous
 6.12 ROVER Polarimeter Specific
7 WCS NDF Extension
 7.1 Source RA/Dec, telescope location, and observation time
 7.2 Frequency scale
 7.3 Velocity definition
 7.4 Using the WCS frameset
8 Suggested example GSD files
A Headers and Arrays in GSD DAS files
 A.1 GSD Headers
 A.2 GSD Arrays
 A.3 Dimensionality of GSD Arrays