A type of computer font format created by Apple Computer (and adopted by Microsoft) as an alternative to AdobePostScript fonts. TrueType fonts can be used both for bitmapped screen display and for vector-based output, the goal being to eliminate the need for two sets of fonts: screen fonts and printer fonts. Systems cannot utilize both TrueType fonts and fonts running with Adobe Type Manager. PostScript fonts are still the fonts of choice for high-quality output. Additionally, when dealing with a service bureau, a thing to remember is that most service bureaus have spent years compiling libraries of PostScript fonts, so very few use TrueType fonts. TrueType fonts are often used on office computers, and some prominent multimedia authoring programs (such as Macromedia Director) support TrueType over ATM.