Sets the draw order for all hatches in the drawing to be behind all other objects.
Access Methods
Button
Toolbar: Drafting tool set 
Move/Rotate/Scale tool group (expanded) Draw Order flyout Send Hatches to Back Menu:
Tools
Draw Order
Send Hatches to Back
Summary
Selects all hatches in the drawing, including hatch patterns, solid fills, and gradient fills, and sets their draw order to be behind all other objects. Hatch objects on locked layers are also modified.