[daip] UVFLF -cannot unflag VLBA data

[Eric Greisen]

Robert Mutel wrote:
> Ok, this works (opcode = 'reas', reas 'Ellipsoid posn error [no trailing 
> quote], all other adverbs defaulted.
> 
> I suggest adding an example like this (including using PRTAB to 
> determine the exact text of the flag reason, and the lower case match] 
>  to the explain file for UVFLG, because this procedure is not completely 
> clear from the write-up. 
> 
> [I think most users would expect that opcode = 'uflg' would work, but as 
> Eric said, it is very
> particular and difficult to get to work]
> 

I have added two more "I don't care" special values for STOKES and 
SOURCE and a comment in the help about how to use TAFLG in frustrating 
cases.  I guess an Explain with a fully worked example might be useful.

ERic Greisen