Selection

Methods for creating, modifying, or deleting macros for atom selections. Often you’ll want to create a short word that expands to mean more in an atom selection context: for example, the built-in macro noh expands to not hydrogen.

add_macro	Create a new atom selection macro.
all_macros	Get all defined macros
booleans()
del_macro	Delete an atom selection macro, by name
functions()
get_macro	Gets the atom selection string corresponding to a macro
keywords()
stringfunctions()