I shall try to explain here the concept of incremental skins present
in myrpl magic creator.
The basic idea is that a skin could modify either all or part of a previous
Suppose that when you load the calculator you see a skin named skin zero
You could load a new skin named , for example, skin one.
This skin modifies parts of skin zero.
Then , you load another skin, for example, skin two.
This skin modifies the result of skin 0 + skin 1
Now, if you load another skin, for example, skin three,
this skin changes things present on the result of mixing
skin 0 + skin 1 + skin 2.
So, you could load a train of skins , each new skin is applied over the mix
of all previous skins.