What is a mosaic?
Is a token in NEM terminology. A smart programmable token.
Who can create a mosaic?
Anyone can create a Mosaic
What is levy?
Is a fee that can be collected from transactions between mosaics.
What does it mean to create a mosaic with mutable supply?
You can modify the initial supply of the mosaics you create, either to be able to make more or fewer mosaics.