Adobe Photoshop CC 2014 v.14.xx User Manual
Page 599

Normal Brush Tip restricts the cursor size to areas of the brush stroke that have 50% or more opacity.
Full Size Brush Tip sizes the cursor to the entire area affected by the brush stroke. For soft brushes, this produces a larger cursor size
than the Normal setting, to include the areas of the brush stroke with lighter opacity.
To combine different types of cursors, select Show Crosshair in Brush Tip or Show Only Crosshair While Painting. Or, for the Pen and Brush
tools, press the Caps Lock to toggle between the standard cursor and the cross hair.
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