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3. Basics of PhotoLine

## 3.3 User Interface Elements

### 3.3.1 Basics

PhotoLine uses some special user interface elements to show the user colors, brushes, line styles and curves. These are called color field, brush field, line style field and curve field. They have in common that:

- their content can be edited by double clicking
- the content of the field can be dragged to a field with the same kind
- the context menu of many user interface elements allows to copy and paste their content. This way you can transfer the value of one field to another where direct Drag&Drop is not possible (for example transferring the color of one layer to another). Often the context menu offers additional functionality.