Fonts are a perennial bugbear of prepress work. Never use the ‘faux’ italic and bold type style functions in your software, as the RIP (see page 69) will probably ignore or misinterpret them; you must use true italic and bold fonts. Check whether TrueType or Open Type fonts can be used; in many cases only PostScript fonts will work reliably. When the job is sent, make sure all the fonts are collected for output: it is an infringement of copyright to supply the fonts to the bureau or printer unless it already owns them (see font Copyright, page 186), but it is vital to ensure they have precisely the same versions you have used. Sending jobs as PDF gets around this issue, since you can ‘embed’ the fonts used in a document. If the bureau is likely to be asked to make last-minute text corrections, however, problems can arise. Only a ‘subset’ of each font is normally included, leaving out unused characters to reduce file size, but this means the omitted characters will not be available. Some new fonts also have their digital ‘permissions’ set to prevent them being used, when embedded, for any purpose other than viewing or printing, meaning the bureau will be unable to make changes unless a purchased copy of the font is installed.