Ralph, When you put your documentation of what you're doing in the 'explain your changes' section on the 'edit' page, no one can see that later on the profile if they don't click on the 'changes' tab.
When you want to include a source like 'Documentation from: Marriage Record of Laclede County, Missouri and Death Record from Washington County, Arkansas.', that should be entered further down the page in the 'Edit Text' area, under the heading ==Sources==. That way it will be displayed on the profile after you save the information.
In the 'explain your changes' you're expected to give a brief description of what you're doing, like 'add a source', or 'correct a typo.'