Today’s good question comes from Dave. He asked how you can mask objects behind text.
You can apply a background mask to Mtext objects using the Properties window. You’ll see the Background Mask property under the Text panel. Click on the button to access the Background Mask dialog box where you can specify the border offset (the space around the text) as well as the fill color. You can also access the background mask from the right-click menu within the Mtext Editor.
In addition to applying a background mask to Mtext objects, you can mask the background of dimension text. For dimensions, this property is called Fill Color and can be found under the Text panel in the Properties window or the Text tab in the Dimension Style dialog box.