3. Basics of PhotoLine / 3.3 User Interface Elements
3.3.3 The Brush Field
The brush field shows the brush, which will be used for drawing tools:

PhotoLine
is distinguishing between 2 kinds of brushes:
- Geometric brushes
- Geometric Brushes are oval or rectangular. They can be edited very
flexibly with the brush editor (see chapter 3.5).
- Free brushes
- Free brushes are normal gray images. Therefore, it is possible to drag
any kind of layer onto a brush field to create a custom brush. The layer
will be converted automatically to a gray picture. The inverse case is
possible, too: On Windows, it can be dragged to a free part of the main
window to create a document with the pattern. On macOS, you have to
drag the pattern to a non-PhotoLine window and to hold Alt.
A double click allows editing the current brush.