Clearly Mark Non-Editable Pages

I've been helping with documentation pages and found that some pages appear to be editable, but in fact are off limits.

This seems to be related to Full HTML pages or Auto-generated pages. The pages themselves look like any other page - which is what causes the confusion.

Would the redesign infrastructure team please discuss possible solutions to this that involve a visual queue?

After my hand gets slapped for dinking with a page, I then go beg forgiveness OR
After I try to edit a page I realize I have to go grovel in another issue queue to get someone else to do my dirty work.

All this begging is making my knees hurt (she said with a smile).