/warp <WARP NAME> [player]
This command will teleport the player who enters it to the warp location specified. If a second argument is specified then that player will be teleported using your warp permissions (need simplewarp.other). If no arguments are entered a list of warps you have access to will be returned (requires simplewarp.list).
/addwarp <WARP NAME>
Adds a warp with the specified name to your current location on the map. Coordinates are rounded.
/delwarp <WARP NAME>
Deletes the warp with the specified warp name.