1. Tap the applications icon on the far right of the canvas menu bar to get access to your files, applications and Internet browsers
2. Open the file, application or webpage that you wish to capture
3. Tap the camera icon
4. Tap and drag your finger over the area you wish to capture. This will drag a capture outline around the area. If you are happy with the area you have selected, tap Capture region. If you did not select the correct area, tap the camera icon to start again.
5. An image of the captured area will be automatically pasted onto the canvas
Once the screenshot has been added to the canvas you can use all of the image editing features on it.
Source: Nureva Span