Editing Toolbar

 Work and Crop Area tool: 

With this tool you can define a rectangular region, to crop pictures. After defining an area you can select from Main menu > Edit > Crop to work area or just use the shortcut Ctrl+A. The Work area can also be used similarly to a rectangular selection, but if you want to define a real selection, you should use the correct tools described further.

Layers tools:

Move Layer tool:

After selecting a layer from the Layers Window, you can move it using this tool. Just click and drag to move the layer in a new position. You can move both text and image layers with the same tool. If you shift+click you can use this same tool also to select the most visible layer on which you clicked.

Erase/Restore Layer tool:

This tool modifies the opacity(alpha channel) of an image layer. you can use it as a normal brush: when you change the alpha channel, the layer will blend with different intensity with the background. With this tool you can create see-through regions on the layer. 

The same tool, if used in restore mode, can restore the alpha channel thus increasing the opacity of the layer.

Selection tools:

Move Selection tool: 

Once you have created a selection use this tool to move it on the picture. This does not move the pixels underlying the selection.

Create Selection tools: 

Using selections you can later apply any image processing only to selected parts of the picture. You can select complex regions using different tools like the following:

-Select by color

This selects area of similar color in all the picture, using a tolerance.

-Select by Magic Wand

This selects area of similar color locally, using a tolerance.

-Select by painting

You can paint a selection with this tool.

-Select by Lasso 

You can define an irregular region selection by drawing its borders

or you can use geometric selection tools like

-Rectangular, Elliptic, Linear or Pencil selections

 

Editing Tools:

  Color Picker: 

Picks a color from a pixel in the picture. You can also pick a color by right-clicking the picture with the mouse.

Drawing tools 

Pencil, Lines, Arrows, Rectangles, Ellipses, Bezier curves.

Text tool.

Fill tool:

Fill areas of similar color locally, using different modes (color,texture etc..)

Color Replace tool:

Replace areas of similar color in all the picture,  using different modes (color,texture etc..)

 

Painting Tools:

Paint Brush tool: 

Can apply by painting color, texture, or retouch operations (depending from the current edit mode). 

  Clone tool:

With this painting tool you can copy a source picture over a target picture .

  Objects Stamp tool:

This allows you to paint with objects.

Deformer tool:

Warp tool, lets you deform pictures.

  History tool:

This tool restores by painting a picture stored in the undo buffer.

You can control all the parameters and settings of the selected tool by the tool window (example of tool window when the paintbrush tool is active):