Here Be Content
I have always liked the idea of medieval mapmakers using the phrase "Here Be Dragons" to denote unexplored or dangerous territories. Sticking a fire-breathing reptile in documentation when you run out of facts? That’s panache.
These days, people aren’t so stylish. When an information architect (or user experience designer) doesn’t have the time (or the talent) to document content requirements, they stick a "page stack" on their site map.