itself from its data source.
.PP
Rather than invent some complex interface for this, the packet buffer
-exports one of its structure members,
-.BR flags .
+exports one of its structure members, a flags words called
+.BR f .
A higher-level object wishing to disable the packet buffer simply clears
the bit
.B PKBUF_ENABLE
-in the flags word.
+in this flags word.
.PP
Disabling a buffer causes an immediate return from
.BR pkbuf_flush .