The Deck Railing tool is used to add protective railings around decks, balconies, or any open edges. Railings are important for safety because they help prevent people from falling, and they also improve the overall appearance of your outdoor space. For example, if you have a raised deck in your backyard, adding railings makes it both safer and more realistic in your design.

To use the Deck Railing tool, go to the Deck tab in the main toolbar and select it. Next, choose a draw method (this determines how you want to draw the railing, such as along a straight line).

Then click along the edge of the deck where you want the railing to appear. After placing it, you can adjust the handrail height, spindle spacing, and railing style in the Properties panel. You can also apply different colors and materials in the 3D view to match the look of your deck and home.