ses: Uses of defadvice in SES

 
 5.5 Uses of defadvice in SES
 ============================
 
 ‘undo-more’
      Defines a new undo element format (FUN .  ARGS), which means “undo
      by applying FUN to ARGS”.  For spreadsheet buffers, it allows undos
      in the data area even though that’s outside the narrowing.
 
 ‘copy-region-as-kill’
      When copying from the print area of a spreadsheet, treat the region
      as a rectangle and attach each cell’s formula and printer as ’ses
      properties.
 
 ‘yank’
      When yanking into the print area of a spreadsheet, first try to
      yank as cells (if the yank text has ’ses properties), then as
      tab-separated formulas, then (if all else fails) as a single
      formula for the current cell.