ALTO Edit is a relatively simple tool to use for OCR correction. Once a text is uploaded, each page is displayed separately in the left side of the tool. On the right side, you see the OCR text divided into lines and words. Click on line to start correcting. The image on the left automatically zooms into the line you selected. You can change the view of the image by clicking '+' and '-' on the top left of the tool. The '[=]'-button zooms out the show the whole page again.
Correct the words that are misrecognised. If you see a segmentation error, simply empty the field for words that are split up, or type a space for words that are joined. Once you close the edit-field by pressing 'Enter', three red exclamation points appear next to the line. Click on them to open the segmentation-window.
An extra button appears in the text of the line under the word you want to correct. Click on the button and place the black marker where you want to split the word. When you have emptied a field, the field appears in red. Click on the field and then click 'Verwijder dit segment', to remove the whole field. Do remember to type the text into the field where it belongs! Once you have completed a page, click 'Opslaan' to go to the next page.