If line wrapping is on (see gtk.label.Label.setLineWrap) this controls how the line wrapping is done. The default is pango.types.WrapMode.Word which means wrap on word boundaries.
the line wrapping mode
If line wrapping is on (see gtk.label.Label.setLineWrap) this controls how the line wrapping is done. The default is pango.types.WrapMode.Word which means wrap on word boundaries.