Automatic Hatching
You can hatch any area fully enclosed by drawing lines or already hatched.
To automatically hatch a drawing area:
1. Click Drafting and then, in the Annotate group, click the arrow next to 
Hatch.
Hatch.2. Click Automatic.
Automatic.3. Specify a point inside the area to be hatched.
The cursor automatically tracks around the enclosing polygon and then searches for any inner holes. Having established the inner and outer contours, Creo Elements/Direct Drafting hatches the bounded area. If Creo Elements/Direct Drafting finds any gaps or incorrectly split lines in the enclosing polygon, the command is aborted and Creo Elements/Direct Drafting marks the gap or split line.