Difference between spiccato and staccatissimo

[rettinghaus]

Currently the difference between spiccato and staccatissimo is purely a visual one between "stroke articulation" vs. "wedge articulation". As far as I know there is not so much of a visual difference of how these are written, but more of semantic one. And in SMuFL all of these are named "staccatissimo", which leads to confusion about which one to use for what. Maybe this can be clarified further.