You sometimes see More indicators in the Navigator. These indicators are used to
keep the Navigator tree compact so that you can see more in the viewable area without
having to scroll.
Click More to open that branch of the tree.
When clicking Expand on a Navigator branch of more than, by default, 25 child
items, you are prompted to enter the number to expand at one time. You can also
right-click a Navigator item and click Expand to open the Expand child items
window. After you enter the number to expand, a group of child items opens. Click More to open the next group of child items.
In large managed environments this feature helps you control the Navigator display and
its performance. In this example, the expansion limit of 4 was chosen for the Windows
Server branch: