Let's say you want to create a marker for 4 sizes and you want to mark
each size in 4 different fabrics (SELF) (LINING) (FUSING) (CONTRAST)
to calculate total sizes that there will be in your marker simply multiply
your sizes in this example 4 by the number of fabrics that you will be
marking each size on in this case 4 fabrics so the formula should look like this:
4 SIZES X 4 FABRICS= 16 SIZES IN TOTAL TO BE MARKED.