Option Explicit
Sub YourLargerMacro()
  If fcnXorY Then
    MsgBox "Do x"
  Else
    MsgBox "Do y"
  End If
lbl_Exit:
  Exit Sub
End Sub
Function fcnXorY() As Boolean
'A basic Word Macro coded by Gregory K. Maxey
Dim oRngStart As Range, oRng As Range
Dim bDo_x As Boolean
  bDo_x = False
  Set oRngStart = Selection.Range
  Set oRng = ActiveDocument.Bookmarks("\Page").Range
  With oRng.Find
    .Text = "^m"
    If .Execute Then
      bDo_x = True
    Else
      With oRng.Find
        .Text = "^b"
        Do While .Execute
          oRng.Collapse wdCollapseEnd
          oRng.Select
          If Selection.Sections(1).PageSetup.SectionStart <> wdSectionContinuous Then
            bDo_x = True
            Exit Do
          End If
        Loop
      End With
    End If
  End With
  oRngStart.Select
lbl_Exit:
  Exit Function
End Function