You can use DataTips to expand an array, a structure, or an object to view its members. You can also edit the value of a variable from a DataTip.
To expand a variable to see its elements:
In a DataTip, put the mouse pointer over the + sign that comes before the variable name
The variable expands to show its elements in tree form.
When the variable is expanded, you can use the arrow keys on your keyboard to move up and down. Alternatively, you can use the mouse.
To edit the value of a variable using a DataTip