From Apple: The Font Manager Update extension fixes the following problems in the Mac OS 8.6 Font Manager: * Corrupt FOND resources: Under certain circumstances, the Font Manager in Mac OS 8.6 may create a corrupt resource inside some applications or fonts. When this occurs, fonts with corrupted resources cannot be moved and some third-party font management tools may crash. * Bad character height: In Mac OS 8.6, the height of characters in Apple's Japanese and Traditional Chinese fonts is one pixel shorter than in Mac OS 8.5, leading to problems displaying, editing, or printing text. IMPORTANT The Update prevents the Font Manager from creating corrupt FOND resources, and eliminates problems caused by these corrupt resources. However, the update will not correct or remove any previously corrupted resources. To repair damaged files on your computer or on disks that are connected to your computer, you must use the Font First Aid utility, included with this update.
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