A method and system of placarding wherein at least one sheet of corrugated
cardboard is provided with printed matter on at least one side. The sheet
is also provided with at least one score crossing the sheet. The sheet is
foldable into an easily transportable unit. At a placarding site, the
sheet is unfolded and inserted into a holder. The holder retains the sheet
such that at least one part of an edge area of the sheet is enclosed by
the holder.