Then click on the button “Add Pick Points” need to click in an area that we want to fill the hatching and press the Enter key to make. However, as we have transitioned to computer. Hatches are a collection of lines which fill an area in a pattern. CAD concrete, textured, stippled hatch patterns. The Patterns list shows which patterns are available. … The hatch pattern has a hatch background color assigned to it. pat file and they can all be saved into that one file. Autocad hatch concrete Choose from: Predefined hatch patterns.