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Changes between Version 1 and Version 2 of Ticket #6067, comment 4

v1	v2
1		It can also happen that there are more than one set of symmetry operators which is said to produce chain identifiers like A-3-25. So they can get longish. The ~~use the original PDB chain ids as the prefix, so we may also see for a model with chain 1, chain ids like 1-2, 1-3, 1-4, 1-27. At any rate if you know the tricks~~ still get by in ChimeraX with these files.
	1	It can also happen that there are more than one set of symmetry operators which is said to produce chain identifiers like A-3-25. So they can get longish. They use the original PDB chain ids as the prefix, so we may also see for a model with chain 1, chain ids like 1-2, 1-3, 1-4, 1-27. At any rate if you know the tricks you can still get by in ChimeraX with these files.
2	2
3	3	But some things in addition to hand-type atom-specs are broken. For instance menu Select / Chains / A-10 does not select anything producing command "select #2/A-10". And other GUI generated commands are likely to fail unless we spruce up the Python code that produces atom specifier strings so it looks for "-" in chain identifiers. The mmCIF spec seems to allow not only "-" but also "/", ":", ",", "&", "\|", ">", ... basically any punctuation in the chain identifier. If anyone starts using these in mmCIF files ChimeraX is going to be pretty upset about it.