User Guide

FontLab 4
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A dva nc e d Opt i o n s
Click on the button in the Options panel and click on the Advanced
button in the Stems dialog box. You will see a dialog box expand which
includes the advanced options area:
Stem snap precision
Measured in 1/16 of a pixel, this value defines the difference between the
actual stem width (scaled but not rounded) and the stem width in pixels
specified by the stems dialog box. If the difference is more than the defined
value, the stem is rounded linearly. A value of 16/16 will mean that stem
rounding will be controllable only when the difference is less than one
pixel. A value of 32/16 defines a possible difference of 2 pixels.
Stop zones alignment above this PPM
Enter the font size in PPM after which zone alignment will not be operative
and all points controlled by the AlignTop and AlignBottom commands will
be rounded to closest pixel edge.
Do not execute instructions above this PPM
Defines the PPM above which instructions will not be operative anymore.
Enter 0 to never stop instructions.
Shift key constrains setting of the delta instruction’s direction
Inverts the function of the
SHIFT key when you define delta instructions. By
default you can freely move the destination point of the delta offset and
you have to press
SHIFT key to limit direction to the current hinting
direction. When this option is deactivated, delta offset direction will be
fixed and you have to press
SHIFT key to “free” it.
You may click Apply button to immediately see results of the new options
in the Preview panel.