THE INDEX SECTION
Tip & ink
A 0.7 mm point is not our measured line width
Keep the catalog point size separate from the mark on your own paper.
Fine and medium need a product family beside them
A word on a catalog is less specific than the exact model and declared size.
A chisel tip offers two marking orientations
Broad and fine descriptions do not supply a tested numeric width.
Read the ink family before assuming a surface use
Liquid gel, highlighter and permanent-marker names answer different questions.