This is a... um... VERY LONG TUTORIAL on how to place goal descriptions in a level, how to make them show, show as complete, and maybe even hide them.
Now, it isn't simply just to write a goals number and its description, you will also have to script the events, like entering a room. And I end up getting carried away with the coding, going through all possible symbols, messages, how to play a sound, print a message, show and complete a goal. Another reason why it may take its time is because I didn't script this part. Just made a list and did my best to describe each bit.
If you get sorely confused, well, programming is confusing. Has English words, but a confusing grammar. You might want to read up on C for Beginners. After that check out a Datamaster or the JKHub's reference pages: http://www.jkhub.net/library/reference.php
Also, tried a new desktop recording technique which lost some audio here and there. Hope you can follow along.
See the whole JKEdit Tutorial series here: https://www.youtube.com/playlist?list=PL4AC8914E1D041044