Design Master HVAC allows you to draw hatches on your ductwork.
To insert a hatch, use the Layers command.
Ribbon: DMH: Customization->Project Customization-> 
Layers
Pulldown Menu: DM HVAC->Customization->Layers->Edit Project List
Select a layer system, then press the Edit System button to open the Layer System Options dialog box:
Use the Hatch Settings table to set the hatch pattern for the ductwork. Leave the Type as Predefined unless you have experience creating custom hatches.
To see previews of all of the different hatch types, use the standard HATCH command:
- Type HATCH at the command line.
- Type T for settings.
The Swatch listed in the Type and Pattern section will show you what each pattern looks like.
