For such situations when you need to have left and right column to be the same of several different pages we have special page layout (wiki layout):

For such layout you can manage content in left and right columns in one place, we call them subpages, particularly for wiki we have the following the following subpages:

• Subpage: Pages List (serves as left column)
• Subpage: Page Contents (serves as right column)

#tipsandtricks