Hi

The 'labels' are the text you put in the slide titleholder (where it says
'click to add title'). If you don't want them to be seen on screen either
drag them off to one side or use the same colour for the text as you have
used for the background.

Lucy

As Lucy says. You might also be interested in this short vba macro which
sets the title to visible / invisible and saves you dragging it off the
slide

Sub set_title()
Dim osld As Slide
Dim toggle As Integer
toggle = MsgBox("Invisible titles?", vbYesNo, "Set title status")
For Each osld In ActivePresentation.Slides
If osld.Shapes.HasTitle Then
If toggle = 7 Then osld.Shapes.Title.visible = msoTrue _
Else osld.Shapes.Title.visible = msoFalse
End If
Next
End Sub