Options and their meanings are:
-I Identify program and exit.
-i item Select first item matching item specification.
-a type Select all items matching item specification.
-f dump selected items in full, rather than the first few frames.
-h dump main header only.
-H dump main header only in XML format.
-T Force terminal output video enhancement (default is use video enhancement only when talking directly to a terminal).
-v Follow links to virtual items, rather than simply reporting them.
-F Report filename at head of report.