## Presentation Device Driver Reference for OS/2

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### FONTMETRICS Field - lUnderscoreSize

lUnderscoreSize (LONG) Underscore size.

The width (thickness) of the underscore stroke in world coordinate units. This describes the actual underscore in the font if FM_SEL_UNDERSCORE is also set. Otherwise it describes what the engine will simulate if underscore is requested in GpiCreateLogFont.