CAD shortcut commands: How to merge multiple lines into multiple polylines?

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When using the HaoChen CAD drawing software, it is often necessary to combine multiple lines into polylines. For example, when trying to calculate the area of a room, selecting just the room’s contour lines does not yield any results; by combining those contour lines, it becomes possible to determine the room’s area clearly. This situation can generally be handled using the CAD shortcut command for merging multiple line segments; let’s go over it in detail! First, it is necessary to see what kind of line is used to draw the segment. The polyline command is: PL. The line command: line, can all be combined into polylines. Regarding polylines: also known as polylines, they represent a composite object in which all the elements drawn together are connected; these elements can be straight lines or arcs, and they can also have different widths. The shortcut key for a polyline is PL. Steps to merge polylines: Enter the shortcut command pedit; the shortcut key is pe. The command window prompts: Select polyline or multiple lines (M)] (enter m to operate on multiple lines), then confirm. Select the polylines you want to edit (one or more), and when the command window prompts for an option, enter C for Close/O for Open/J for Join/W for Width/F for Fit/S for Spline/D for De-spline... The command used to combine two lines into one is Join. Merging two lines into one: 1. Open Haochen CAD; once it starts up, the software interface will appear. 2. Locate the straight line tool in the toolbar at the top of the software interface and click to select it. 3. Use the straight line tool to draw two lines on the same horizontal line, with space between them. 4. Enter the join command and select these two lines. As shown in the figure below, both the Join command and the Pedit command can be used to combine multiple lines into polylines. What has been explained above are the specific usage methods of these two CAD shortcut commands, which enable the combination of polylines and straight lines. I hope this will be helpful to everyone~