\fBtermkey_new\fP() creates a new termkey instance connected to the file handle opened by \fIfd\fP using the \fIflags\fP. The \fBtermkey_tk\fP structure should be considered opaque; its contents are not intended for use outside of the library.
\fBtermkey_destroy\fP() destroys the given instance and releases any resources controlled by it. It will not close the underlying filehandle given as the \fIfd\fP argument to \fBtermkey_new\fP().
If successful, \fBtermkey_new\fP() returns a pointer to the new instance. On failure, \fBNULL\fP is returned. \fBtermkey_destroy\fP() returns no value.