subcol(var,startrow[,stoprow[,increment]])

The arguments are a variable (of any type), and one, two, or three integers. This function returns a portion (subcolumn) of the input variable, from the startrow to the stoprow, counting by the increment. If startrow and stoprow are at least 1 they are interpreted as absolute row numbers; if they are less than 1, they are counted backward from the end of the column (that is, 0 is the last row in the column, -1 is the next-to-last row, etc.). The increment defaults to 1 if stoprow >startrow, and -1 if startrow>stoprow.