The following code works; can someone please explain to a beginner how?

I copied much of the following code, which determines if a filter is used, and it works! But I just can't figure out what the two statements pointed out by arrows do.
In column L row 10 I have

=FindFilterOn(L10)

In a module there is:

Private Function FindFilterOn(ColRow As Range) As String
    Dim Symbol As String
    Application.Volatile
1-> With ColRow.Parent.AutoFilter
2->    With .Filters(ColRow.Column - .Range.Column + 1)
          If .On Then
             Symbol = String(15, ">")
          End If
       End With
    End With
    FindFilterOn = Symbol
End Function

Please someone be so kind to explain to me in simple words the two statements. I'm a beginner. Thank You!!

Sorry, hope it is correct now. Thank you.