Acer ICONIA - Manual (Page 29)

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Capture tool 25
Tap the content you want to copy and select the area you want to crop; tap and
drag on any of the circles on the corner of the crop window to expand it to
include all the information you want to capture.
When you have finished selecting the area you want to crop, tap the area to
open a menu that will allow you to save the clip as an image you can drag and