Dear Bob,

Atom CA can mean calcium or carbon-alpha.
Atom CD can mean cadmium or carbon-delta.
(/Are there other such ambiguities?/)

For both Jmol 14.2.4 and 14.0.17:

'select *.cd' selects both carbons delta and cadmium (1d66).
'select *.ca' selects carbons alpha but NOT calcium (4aqr).

What I am using in FirstGlance that fails to select calcium is
'select *:A.ca&&hetero'
(Well, this is not optimal anyway since it would also select alpha carbons in non-standard residues)

I am now setting about to change my code to
'select [ca]:A'
(special case when the atom clicked is either calcium or cadmium)

However, I suspect that this inconsistency should be remedied.

Best regards, Eric
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