I am following the tutorial on the creation kit wiki site and I'm at the "Loose Ends" Tutorial in the quests section, the problem I'm having is the "map marker" section the text reads

"Navigate to stage 20 of our quest, and add an ObjectReference property to the script, and call it "DungeonMarker". Select the map marker as the target of the property. "

the problem is that they expect me to know how to do this and I just don't, I've already done all other steps in the quest tutorial and I assume they want me to reference the map marker in the "quest alias" Tab, I've referenced an NPC and an object, but I just don't know how to reference the map marker. I may be completely wrong, I just have no idea.

any help would be awsome, thanks.

In the "Scripts" window, select your script, R-Click and choose "Edit Properties", choose "Add Property", then select "ObjectReference" from the dropdown box. From there it should, provided your property matches the EditorID of the marker REFR, automatically fill and point to your marker (DungeonMarker) allowing the record bearing the script to know what to do with said script and with which forms since the script itself has no knowledge of what's going on in any plugins.

thanks a lot that was great help!

Glad I was able to help.