how to create a new pattern or where to get additional patterns
I an designing landscape for a road. My segment starts where another designer segment ends. I want that graphically our drawings will look identical/continuous. He used a pattern that he created in AutoCAD (simple square blocks pattern with staggered verticals). Nothing like that exist in bricscad (we have only rectangular blocks pattern) so I want to make a custom pattern but have no idea how. Sow some samples of .pat files on the net but no guidelines on how to write them. I assume each number there defines coordinates of dashes but what each of them means, their direction and location etc. are not known.
I am looking for guidelines of creating patterns &/or .pat files to download. Any help will be welcome.