In the early 1990s there were several other systems for storing outline-based fonts, developed by Bitstream and METAFONT for instance, but none included a general-purpose printing solution and they were therefore not widely used.
在二十世纪九十年代早期还有其他几种基于字形的字体系统，如Bitstream和METAFONT开发的系统，但是它们都不包括通用的打印解决方案，所以并没有得到广泛应用。