There is no comfortable way to move to the next paragraph in Special:ContentTranslation using the keyboard.
The only way I can see to go to the next paragraph is to click it using the mouse.
I can't see that I can get there using the Enter key, which is the usual way to go to a next new paragraph in most word processors. I'm not sure, however, that Enter is the totally right way to do it:
- In general, CX is not a usual word processor.
- In a usual paragraph Enter is probably not needed - it's one paragraph in source, so it should be one paragraph in translation. Although some translators may want to insert a paragraph before the next translatable paragraph (some people asked for it, but it's not a high-prio issue).
- In numbered and bullet lists, however, the Enter key is essential for adding an item.
Maybe it could be Tab, or some key combination. This requires some design thought.