From OpenSCADAWiki
Next we'll add a new frame by selecting "... from the Library"->"Library: originals"->"Group of elements" (Fig.5.2.2) in the context menu of the created library "CM 101". In the dialog of entering the name we'll specify AT101 (AT 101). In the basis of any frame and page must lay the primitive "Group of elements (Box)", and therefore we have chosen it.