tool guide

1) Select square regions from an image.

2) Select circular regions from an image.

3) Select abstract regions from an image.

4) Select connected regions of a certain color. (threshold: how close the color has to be to the one you selected, includes different shades. 100% selects colors.)

5) Same as #4, except the regions do not have to be touching; it selects all of a particular color in an image. (threshold applies)

6) Detects shapes and patterns in image and allows you to select them.

7) Create and edit curved paths.

8) Select a color from the image as your foreground color by hovering over it and clicking.

9) Zoom in and out of the image.

10) Measure angles and distances (view the bottom of the image window to see the length of the line in pixels, as well as the angle.)

11) Move the image or selected region.

12) Crop the image.

13) Rotate the image.

14) Enlarge/shrink the image. (Resize)

15) Shear the image. (angles it from left to right.)

16) Drags one corner of the image "closer" to you.

17) Flips the image from left to right.

18) Adds text to the image (on a new layer)

19) Fills the selected area or similar colors. (depending on threshold)

20) Fills the selected area with the active gradient.

21) Draw pencil lines.

22) Draw antialiased (blurred, smooth edged) lines.

23) Erases the selected (turns to background color unless transparency is enabled)

24) Uses different brushes in an effect similar to air-brushing. (the longer you hold it down, the darker it gets)

25) Paints in an ink-resembling style. If you move the mouse when you're using it, the shape gets bigger. Brushes do not apply to these tool.

26) Paint using the active pattern.

27) Blur or sharpen the image.

28) Smudge the image.

29) Dodge/burn (lighten/darken) the image.