Help Understanding Some Code

I got some help with a code the other day and I'm trying to understand how it works. I started making some notes for myself but got confused after a certain point. Could someone please try to explain in layman's terms what the following code does?

Option Explicit
Sub Data_Summary_Macro()
  
 'Defines dynamic value in code
  Const C = 12
    
   'Defines dynamic ranges in code
    Dim R&, S&, Rf As Range
        
       'Clears any previous data after the first row
        UsedRange.Offset(1).Clear
        
       'Turns off screen updates
        Application.ScreenUpdating = False
        
       'Defines dynamic value in code
        R = 2
        
   'Defines S as 2 through the total number of sheets
    For S = 2 To Sheets.Count
        
       'Starting with sheet #2, define Rf as the used range, column 2, the row after where "Name & ..." first appear
        With Sheets(S)
               Set Rf = .UsedRange.Columns(2).Find("Name & *", , xlValues, 1)
            If Not Rf Is Nothing Then
                With .Range("B9", .[B8].End(xlDown)).Resize(, C).Rows
                    Cells(R, 1).Resize(.Count, 5).Value = Array(.Parent.Name, Rf(0).MergeArea(1).Text, Rf(2).Text, _
                                                                .Cells(-3, 2).Value, .Cells(-3, 4).Value)
                    Cells(R, 6).Resize(.Count, C).Value = .Value
                    R = R + .Count
                End With
            End If
        End With
   
   'Restarts above action with next sheet
    Next
    
       'Turns screen updating back on
        Application.ScreenUpdating = True
        Set Rf = Nothing
End Sub

I've also attached the example workbook so you can see the context.

Thanks very much!