ACF, ACB, and AWB files can be open. It is possible to open a single ACB or AWB file, but in that case, some data - that depends on the ACF - will be ignored. Single ADX/HCA files can also be opened.

Item	Action
Open Atom File... (Ctrl+O)	Opens an ACF/ACB/AWB/HCA/HCA-MX/ADX file.
Open Recent File ...	Opens a recently used file.
Exit	Exits.