our guide which provides an outline of how to use Services. The guide may be amended from time to time, and can be viewed at three.co.uk or requested from Customer Services. There may be more than one User Guide to suit use of Services on different Handsets.
A user guide, also commonly known as a manual, is a technical communication document intended to give assistance to people using a particular system. It is usually written by a technical writer, although user guides could be written by programmers, product or project mangers, or other technical staff, particularly in smaller companies.