So far, we have worked with attributes that are visible in the drawing area, but you can make attributes invisible as well. There may be blocks where you want to keep some of its information hidden from the drawing, such as the name of the manufacturer of a chair block or the name of the person in the cubicle tag that we made in the preceding example. For these kinds of blocks, you can make invisible attributes that, by default, won't show in the drawing area, but you can still see them by using some extra options:
Figure 4.82: A chair drawing to be used to make an invisible attribute
In the following example, ...
