dot.

French to English Other Education / Pedagogy Course / fee breakdown

In a table with a student's Fiche d'inscription from Belgium showing the courses / classes attended and fees.

I have previously posted this term spelled "dol.", but can now see I misread it.

Queried term in asterisks *

Financ. Désignation Classe [Class name]
Niveau DI [droit d’inscription - Enrolment / registration fee]/Exempt.
*Dot.* U [Unité - Unit] Initiation a l'anglais Informatique UF1 (just an example of a course name)

“Dot.” comes under the “Niveau” heading, which comes under the “Finance.” heading
Sometimes under the “Dot.” heading there is the “SS” abbreviation and sometimes “SI” (which I believe stands for SS = secondaire supérieur and SI = secondaire inférieur = upper and lower secondary education)

Any idea what “Dot.” stands for? Dotation / doté?