# Blue Read Tool – Processing Images

When you create a new Blue Read tool, it is ready to start finding and reporting characters in images. All you need to do is specify the ROI in your images, and the size of your characters, via the Feature Size parameter. As soon as you do this, you can process a single image (in the image, right-click and select Process from the menu) or your entire training set (click the Book icon).

The Blue Read tool indicates the characters it found by drawing a yellow box around the character, with the decoded character value (label) in the corner. The Blue Read tool refers to this as a “feature”.

You can select one or more features in an image by clicking on them, shift-clicking to add additional features to the selection, or holding the shift key down and dragging a region to select a group of features. Selected features are shown with a heavier border around the graphic:

You cannot move features, because a feature is where the tool found a character, not where you think the character should be. You can delete a feature (right-click the feature and select Delete Feature from the menu), but this does not affect the tool. The next time you process the image, that feature will just come back.