For what reason?
Generally the 'Finish' is the outside skins, the 'Core' is the structural skins (usually the centre) and every thing else in between those (battens, membranes, insulation, panelling, etc.), is 'Other'.
You can have as many skins of each type as you want.
The only things you can't do is have 'Other' skins between 'Core' skins or 'Finish' skins between 'Other' skins.
They have to be in the order of 'Finish', 'Other', 'Core', 'Other', 'Finish'.
But if you want you can have something like ...'Finish', 'Finish', 'Other', 'Other', 'Other', 'Core', 'Core', 'Core', 'Other', 'Other', 'Finish', 'Finish'.
One of the forum moderators.
Versions 6.5 to 25
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