...
One of the aims of Metview 4 is to utilise the new features of Magics++. This requires some icons to be updated, specifically the visual definition icons such as Contouring and Coastlines. In order not to interfere with Metview 3's existing icons, Metview 4 defines a new set. These icons look the same as the old ones, but have some different parameters available. Metview 3's icons continue to work as normal (with some possible changes in behaviour), but they will appear slightly greyed out. The following screenshot shows this difference.
Metview 4 will not allow you to directly create new instances of the 'old' icons, but you will find the new ones in the desktop drawers and in the New Icon desktop menu.
...