Places a dashed grid over the series in the current Window. This is equivalent to using the [F6] toggle key.
GRIDDASH
A dashed grid in the Window display.
griddash
Sets dashed grids. Typing GRIDHV will display horizontal and vertical, dashed grids.
To turn grids on, press the [F6] key or specify horizontal grids, vertical grids, or both by using GRIDH , GRIDV , or GRIDHV respectively via the menus or command line.