“select” creates a named atom selection from a selection-expression.
select name, selection [, enable [, quiet [, merge [, state [, domain ]]]]]
name = a unique name for the selection
selection = a selection-expression
select chA, chain A select ( resn his ) select near142, resi 142 around 5
If a selection-expression with explicit surrounding parethenses is provided as the first argument, then the default selection name is used as the name argument.