Private Sub SetText(ByVal [text] As String) 方括号是什么意思?

Question

MSDN里的
ms-help://MS.VSCC.v80/MS.MSDN.v80/MS.VisualStudio.v80.chs/dv_fxmclictl/html/138f38b6-1099-4fd5-910c-390b41cbad35.htm

……
Private Sub SetText(ByVal [text] As String)

' InvokeRequired required compares the thread ID of the
' calling thread to the thread ID of the creating thread.
' If these threads are different, it returns true.
If Me.textBox1.InvokeRequired Then
Dim d As New SetTextCallback(AddressOf SetText)
Me.Invoke(d, New Object() {[text]})
Else
Me.textBox1.Text = [text]
End If
End Sub

Answer 1

text 是保留字 ...

如果一定要用它做变量名字的话加 [] ...

不然会报错 ...