Options - Validation
On the Tools menu, click Options, and then click the Validation tab.
The Real-time glyph validation settings are used to determine whether the real-time glyph problem detection should be disabled as it would be too time consuming. These settings are only used by the real-time glyph problem detection. When disabled, use the Show glyph problem report to open the Glyph Problem Report window.
Off-curve extreme coordinates detection can be performed global or local.
Note: The Validation features are not available in the Home Edition of FontCreator.