JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Hatch the slab areas Choose View > Visible Objects (). The Visible Objects dialog box will appear. Check "Hatching" under "Slab Areas". Check "Hatching" under "Slab Openings", and click OK. Note: You can also right click to see a popup menu that includes the Visible Objects command. Parent topic: Define the structure