If you mark a question incorrect by mistake, you have an opportunity to fix that in the moment by clicking ''Mark as Correct'' (NZ) or the ''Check'' button (NZM), but, once you’ve moved on to the next question, you’ll need to make the repair manually. One way is to run a search for that word you missed, then move the resulting words to a specific cardbox. On NZ, that means right-clicking the list, choosing ''Remove list from Cardbox'', then right-clicking the list again, choosing ''Add list to Cardbox…'', clicking ''Specify cardbox'', and telling it where to put the question. On NZM, press ''Action'', choose ''Move to Cardbox'', then tell it where to put the question. On NZM, there is another way, which is to use the ''Manage'' tab to locate the question in Cardbox 0, select it, then press ''Action'', choose ''Move to Cardbox'', then tell it where to put the question.

Searching by probability is something you won’t see in the streamlined NZM interface, so for this you’ll need NZ. Open a ''Search'' tab, choose a ''Length'' condition to limit the search to seven-letter words, and add a ''Probability Order'' condition with minimum 1 and maximum 1000; a ''Lax'' search will return more than 1000 words if those following words are equally probable, which is what you probably want. Click ''Search'', then right-click the list and choose ''Add list to Cardbox…'' with the default option to ''Estimate cardbox based on past performance''. (A lot of the listed words will end up in Cardbox 0, but some may be higher if you’ve solved those quiz questions correctly before; any question that was already in your cardbox will stay where it was.) If you want to quiz in NZM with your newly expanded cardbox, you’ll need to sync out from NZ and back in to NZM.