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4. The Screen Setup of PhotoLine / 4.5 The Toolbox / 4.5.4 Settings Of The Vector Toolbox

#### 4.5.4.4 Use "Even/Odd"-Fill Mode, Use "Non-Zero-Winding Number"-Fill Mode

These buttons define the way, how to fill vector layers. They should be used only by experienced users, because at least the "Non-Zero-Winding-Number"-rule is quite hard to understand.

This functionality is mainly used by importing PDF files which may contain both fill modes.