A scrip is any substitute for legal tender. It is often a form of credit. Scrips have been created and used for a variety of reasons, including exploitative payment of employees under truck systems; or for use in local commerce at times when regular currency was unavailable, for example in remote coal towns, military bases, ships on long voyages, or occupied countries in wartime. Besides company scrip, other forms of scrip include land scrip, vouchers, token coins such as subway tokens, IOUs, arcade tokens and tickets, and points on some credit cards.