- Open an existing PAT file or create a new file in a text editor that saves in ASCII format (for example, Notepad on Windows® or TextEdit on Mac OS®). 
	 
Note: If you are creating a new PAT file, the PAT file and pattern must have the same name. 
	 
 
   
- Create a header line that begins with an asterisk and includes a pattern name that is no more than 31 characters in length. 
	 
For example, 
		*ANGLE 
	 
 
   
- Optionally, include a description for the hatch pattern by adding a comma and descriptive text after the pattern name. 
	 
For example, 
		*ANGLE, Angle steel 
	 
 
   
- 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 
		
 
 
	 For example, 
		0, 0,0, 0,.275, .2,-.075 
	 
 
   
- Create a second line including all the parameters in the previous step. 
	 
For example, 
		90, 0,0, 0,.275, .2,-.075 
	 
 
   
- Optionally, create additional lines to complete the multiple-line hatch pattern. 
  
 
- Add a blank line after the last descriptor line. 
	 
Note: If the blank line is missing, the hatch pattern won't be recognized by the program.