The media library contains a list of predefined and user-defined media. You can either
add a predefined medium from the library to your model or add your medium to the
library.
On the Construct tab, in the Define group, click the Media icon. From the drop-down list, select the Media Library icon.
Figure 1. The Modify Media Library dialog.
Note: The medium type is indicated in the Type column.
Predefined media (provided as part of the Feko
installation) are indicated by the text Altair Feko.
User defined media are indicated by the text
User.
Media icon. From the drop-down list, select the 
Media Library icon.