You can create wires manually in addition to the remote package's interface creating them for you. To create a wire, you need a Unix ıfile descriptor. If you are unfamiliar with Unix file descriptors, see section 2 of the Unix manual pages.
[Function]
wire: make-wire descriptor
The function make-wire creates a new wire when supplied with the file descriptor to use for the underlying I/O operations.
[Function]
wire: wire-p object
This function returns t if object is indeed a wire, nil otherwise.
[Function]
wire: wire-fd wire
This function returns the file descriptor used by the wire.