Conventional keyboard modifier for expanding/collapsing hierarchical tree view

1. What is the shortcut for expand collapse?
2. What is the shortcut key for Expand?
3. Which of the following properties decides whether the items in Treeview can be collapsed or expanded?

What is the shortcut for expand collapse?

14. To quickly expand or collapse all rows and columns in a sheet, use the keyboard shortcut Ctrl+A (select all), then double-click on the right-hand border of any cell, then press the Enter key. 15.

What is the shortcut key for Expand?

Expand / Close All

Where you see braces or regions in code, you can collapse or expand them with the keyboard shortcut Ctrl + M, P to expand or Ctrl + M, O to collapse.

Which of the following properties decides whether the items in Treeview can be collapsed or expanded?

Using the ExpandItem and CollapseItem Actions

Expanded properties let you determine whether a specific tree view item is expanded or collapsed.