It may happen that you have too many items to manage easily in the gradebook, and you would like to simplify things by removing some of them. You could set their weights to zero (0), which would remove their effect on the average. However, they would still be visible.
One solution would be to compress them... take several items of the same type and reduce them down to a single item. This is what the compress/delete button does on the maintenance (Mtce) menu. It allows you to select several tests and then create a single test that is the sum of all of those items. All student scores are similarly added (and adjusted by the item weights) so that the new single student score is identical in effect to all of his/her previous scores (ie. If the student's previous average on these weighted tests was 75%, the new score will give exactly the same percent).
Cloning Items allows you to quickly create large numbers of identical assessment items using an item or items from the current subject-section or others.
In order to clone: