## Presentation Device Driver Reference for OS/2

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### PolyShortLines and Styling

The graphics engine determines how to style the PolyShortLine, and either sets the PSL_YMAJOR bit of the style field or clears it to 0. Therefore:

    if(psl  usStyle & PSL_YMAJOR) {

    Style it Y-major by adding pDC  usStyleRatioY to the error-term value upon each increment
    of y as it is drawn.
    }
    else {

    Style it X-major by adding pDC  usStyleRatioX to the error-term value upon each increment
    of x as it is drawn.
    }