Create an empty file and store it in directory Patterns under any name you like. Now open the file Standard hatchings. There you will see a group of elements for each standard hatching. Copy one of these groups into your empty file. Now ungroup the group. You will now see a rectangle that has neither contour nor fill. This rectangle is used to define the limits of the hatching. All other elements have the hatching. Delete all the elements except the rectangle. Now draw the elements within the rectangle that have the hatching you want. Remove any projecting parts of the elements.

Now group the hatching elements and the rectangle. Then create object info for this group (see Object Info). Use the automatic ID suggested by Arbortext IsoDraw. For a name, enter a term that can be used to identify the hatching. This name will subsequently appear in the hatching list.

Save the file and re-launch Arbortext IsoDraw. The hatching list now contains the hatching you have created.