ADD_INTERFACE (Paper_column, "paper-column-interface",
"@code{Paper_column} objects form the top-most X-parents for items. "
" The are two types of columns: musical columns, where are attached to, and "
ADD_INTERFACE (Paper_column, "paper-column-interface",
"@code{Paper_column} objects form the top-most X-parents for items. "
" The are two types of columns: musical columns, where are attached to, and "