As a learner I struggle to read the definitions in Svenska Akademiens ordbok because of all the abbreviations used. This script adds a tooltip to each abbreviation or symbol (as listed in the appendix) which reveals its definition when you hover over it.

Förkortningar i SAOB

Visar förklaringar för förkortningar och tecken i Svenska Akademiens Ordbok när du hovrar över dem.

https://greasyfork.org/sv/scripts/578625-f%C3%B6rkortningar-i-saob

Notes: You'll need a userscript manager browser extension such as Greasemonkey to add it. It currently only works with a mouse and not a touchscreen.