Hi,
What is the difference between Stylistic sets and Stylistic Alternate features if they do the same work?
Inform in simple way.
Stylistic Alternates (salt) is used for quick, broad toggling of individual alternates or picking alternates ad hoc in a Glyph panel.
Stylistic Sets (ss01–ss20) is aimed at cohesive style switches across multiple glyphs at once.
Ok, tkank you. These explanations needs to be merged into the default manual 
.