Exists Method
Applies To
Bookmarks collection object, Tasks collection object.
Description
Determines whether the specified bookmark or task exists. Returns True if the bookmark or task exists.
Syntax
expression.Exists(Name)
expression   An expression that returns a Bookmarks or Tasks object.
Name   Required String. A bookmark or task name.
See Also
Count property, Name property.
Example
This example determines whether the bookmark named "start" exists in the active document. If the bookmark exists, it's deleted.
If ActiveDocument.Bookmarks.Exists("start") = True Then
    ActiveDocument.Bookmarks("start").Delete
End If
This example determines whether the Windows Calculator program is running (if the task exists). If Calculator isn't running, the Shell statement starts it. If Calculator is running, the application is activated.
If Tasks.Exists("Calculator") = False Then
    Shell "Calc.exe"
Else
    Tasks("Calculator").Activate
End If
Tasks("Calculator").WindowState = wdWindowStateNormal