[fitswcs] WCS documents

[Mark Calabretta]

On Tue 2001/10/16 09:21:32 +0100, Clive Page wrote
in a message to: Mark Calabretta <Mark.Calabretta at atnf.csiro.au>
and copied to: <fitswcs at NRAO.EDU>

>If, on the other hand, the sexagesimal formatting option were to be
>specified by an additional keyword such as TANGLn and a valid TDISPn value
>were also provided, then a file using the new convention would at least be
>displayed in a usable way (though in decimal format rather than
>sexagesimal) by old unreconstructed software.  On the other hand, there's

Clive,

I agree that you can do it this way, but whether this is generally a good
way to extend the standard is a very different question!

How you would implement BITPIX = 1 (a mask) without changing the standard?

Cheers, Mark