Highlight parts of words

You can highlight parts of words you have built by grabbing the side of the display area and sliding the "curtains" in to focus on parts of words. The "curtains" can be brought in from both sides of the display area by holding them down at their edges and moving them in towards the letters.

To reset the curtains to their original position, just 'double tap' on the white area where the word is written, like this: