Laboratory coordinate system

[James Hester]

Dear Core DMG,

It has come to the attention of the High Pressure dictionary development
group that the laboratory coordinate system is never defined in core CIF.
There is `_diffrn_orient_matrix` for the UB matrix but there is no mention
of the coordinate system relative to which the resulting vector is referred.

I would like to suggest that this group resolve this issue.

I have too many CIF balls in the air at the moment to give this the
attention it deserves so I suggest that one or more of you might like to
"champion" this issue by essentially chairing the discussion and not
letting it drop off the back of the desk. I would still participate as time
allows. Any takers?

thanks,
James.
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F +61 (02) 9717 3145
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