-\wxheading{Note} \\ This is obviously inconsistent with the other wxGrid::SelectXXX functions, each
-of which call the corresponding wxGridSelection function whereas wxGrid::SelectBlock is only
-responsible for highlighting a block of cells. There is presently no way to add a block to the
-selection programmatically. This will probably be changed soon so that the existing SelectBlock
-function is renamed to HighlightBlock and a new SelectBlock function introduced to call
-wxGridSelection::SelectBlock.
+Selects a rectangular block of cells. If addToSelected is FALSE then any existing selection will be
+deselected; if TRUE the column will be added to the existing selection.