If the user selects Grid|Add Vertical Grid Line 
or Grid|Add Horizontal Grid Line 
and then clicks on the top, front, or side view of the model, a horizontal or vertical grid line will be drawn at the mouse position. Layer boundaries can be drawn this way in PHAST models, but with MODFLOW models, the MODFLOW Layer Groups dialog box must be used to define the layers. The grid can be rotated around its center by selecting Grid|Drag to Rotate 
and then dragging with the mouse on the top view of the model. Other menu items that are useful in drawing the grid include Grid|Delete Grid Line 
, Grid|Move Grid Line 
, Grid|Subdivide Grid Elements 
, Grid|Set Width 
, and Grid|Smooth Grid... See "Editing the Grid" for more information on these menu items. Note: drawing the grid is not allowed with Well Footprints. Instead, use objects to specify the grid.
