Of two available versions the more recent one as it will almost always be downwards compatible. A newer edition may be selected if available. Titles for computers which are not PCs or Macintosh. Internet Yellow Pages or directories as they rapidly become obsolete. Manuals for home computers, monographs on basic applications, e.g. basic office routines.
Games are normally out of scope unless part of a training package.
The structure, history, philosophy and theory of law, and business, company, commercial and family law. Statutes, tax reports, etc. if they are identified as Official Publications material and if Official Publications Section request purchase. Translations of texts if the translation is likely to offer a new interpretation, or if there is a new introduction. Raw texts without scholarly introduction, criticism, or annotation, but requests for raw texts may nevertheless be satisfied from pre-1980 stock as there are a number of reprints in this category. Alternative medicine, e.g. aromatherapy, subject to the usual rules on level and treatment, if aimed at practitioners.