Creation Kit - how to make message display on screen
Skyrim, Creation Kit tutorial - how to make message display on screen
Basic steps
1. make message you want to show
2. make trigger that activates message (defaultactivateselfTRIG used in video)
3. insert script to trigger that displays message (dlc2defaultshowmessageonactive used in video, script comes with Dragonborn DLC)
Very fast and easy way to make message display on screen. Messages on screen may be useful to give hints for player, location information etc.
If you want to make script of your own to display message, then this may be useful:
Scriptname mymod_scriptDisplayMessage extends ObjectReference
Message Property mymod_messageproperty Auto
Event OnActivate(ObjectReference akActionRef)
mymod_messageproperty.show()
EndEvent
NB: please don't ask advices how to do things in CK, these CK tutorial videos are only examples how I managed to do things I wanted. I keep forgetting things easily so I may look my own videos once awhile :)