Not having a dig Mark, just wondering why some use it and then all the play is oldies, 60's or 70's.
Many venues in the 80's featured 60's alongside current releases, Andy Whitmore for one DJed at many venues and he played truly across the board, as did Cliff Steel, Andy Tats Taylor, Rod Dearlove, many more too....hardly hear any DJ's like these nowadays or many venues with the same "across the board" policy.
One of the best articles I've read in ages is in the latest N-Soul, Brian Gouchers Thorne article, really does capture the palce and tells the story of what a true across the board venue is.