请问有人给我细致地解释一下这部分代码中“自动跳转至目标工作表进行筛选”那里每一行的含义吗?VBA理解题
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Dim Rng, oRng As Range ' 定义变量Rng、oRng为单元格
Set Rng = Range("B2:B18") ' 设定Rng为可操作区域单元格
Set oRng = Selection ' 设定oRng为选中单元格
'如果所选单元格在可操作区域外,退出本次运行
If Application.Intersect(oRng, Rng) Is Nothing Then Exit Sub
Application.ScreenUpdating = False
' 多选则退出,单选设置筛选值
If Selection.Count > 1 Then Exit Sub Else AimValue = Selection.Value
' 自动跳转至目标工作表进行筛选
With Sheets("权限分配表")
If .FilterMode = True Then .ShowAllData
.Range("A1").AutoFilter Field:=1, Criteria1:=AimValue, _
Operator:=xlAnd
.Activate
End With
Application.ScreenUpdating = True
End Sub