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Portability Issues

The bulk of the system is coded in ANSI-standard Fortran. The only VAX extensions used are the SGP/16-sanctioned INCLUDE, DO WHILE, DO ... END DO and names longer than 6 characters. Full ANSI-compliance would be achieved by including the INCLUDEd text, recoding all the DOs and stripping the prefix "HLP_" from external names.

Specific machine dependencies are as follows. Filenames are given in their uppercase VAX/VMS forms, but are always lowercase on the Unix platforms.

The VAX, Sun SPARCstation and DECstation versions of the HLP system are supported by the Starlink Project. Versions for other Unix platforms will be produced if and when they are needed and will also be Starlink-supported. The PC version is supported by the author.



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HLP --- Interactive Help System
Starlink User Note 124
P. T. Wallace
13th June 1995
E-mail:ptw@star.rl.ac.uk