To Edit
Click on the 2D object you wish to edit. A properties panel opens on the left.
Change Layer
Go to the Layer drop-down menu in the left panel. Click on the drop-down menu and click on any of the layers listed therein to switch the object to that layer.
Change Line Color
Go to the Color by drop-down menu and click on it. To denote a custom color, switch from Layer to Self, click on the Color box and either select a color or manually enter the color's RGB code into the corresponding fields.
Change Line Thickness
Go to the Thickness by drop-down menu and click on it. To denote a custom thickness, switch from Layer to Self, and enter the desired value into the Thickness field.
Change Line Style
Go to the Type drop-down menu and click on it. You can select any of the line types by clicking on one of the options listed therein.
Change Radius (Circle)
Click on the circle and enter the desired radius into the Radius field in the left panel.
Explode (Polyline, Rectangle and Polygon)
Click on the polyline/rectangle/polygon you wish to explode into its component lines. Click on the Explode option in the lefthand panel.
Change Arrow Length (Arrow)
Click on the arrow and enter the desired length into the Arrow Length field in the left panel.