2013

This example can help you refine your skills at pattern definition. (Hint: 0.866
is the sine of 60 degrees.)
The following is the AutoCAD definition of this pattern:
*STARS,Star of David
0, 0,0, 0,.866, .5,-.5
60, 0,0, 0,.866, .5,-.5
120, .25,.433, 0,.866, .5,-.5
Hatch Patterns with Multiple Lines
To create a hatch pattern with multiple lines
1 Open the acad.pat or acadiso.pat file in a text editor that saves in ASCII
format.
2 Create a header line that includes an asterisk and a pattern name. The
name of the hatch pattern is limited to 31 characters.
3 (Optional) To include a description in the header line, follow the pattern
name with a comma and description text.
4 Create a descriptor line that includes
 An angle at which the line is drawn
 An X,Y origin point
 A delta-x of any value if you want to offset alternating lines in the
line family
 A delta-y of any value
 A value for a dash length
 A value for a dot length
 An optional second value for a different dash length
 An optional second value for a different dot length
5 Create a second line including all the parameters in the previous step.
6 (Optional) Create additional lines to complete the multiple-line hatch
pattern.
Hatch Patterns with Multiple Lines | 33