query_actions takes either an object or a filename as first
argument and a bitmask (int) or string as a second argument.
If the second argument is a string, query_actions() will return
an array containing information (see below) on the verb or
zero if the living object "ob" cannot use the verb. If the
second argument is a bitmask, query_actions() will return a
flat array containing information on all verbs added to ob.
The second argument is optional (default is the bitmask 1).
1: the verb
2: type
4: short_verb
8: object
16: function
"type" is one of the values defined in <sent.h> (/sys/sent.h)
(which is provided with the parser source).
SENT_PLAIN added with add_action (fun, cmd);
SENT_SHORT_VERB added with add_action (fun, cmd, 1);
SENT_NO_SPACE added with add_action (fun); add_xverb (cmd);
SENT_NO_VERB just an add_action (fun); without a verb
SENT_MARKER internal, won't be in the returned array