[1] Specification (and) Description Language
[2] System Design Language
[3] System Descriptive Language (->“IEEE Standard Dictionary”)
[4] Software Development Laboratory (->“NASA Acronym List”)
[5] Standard Distribution List (->“NASA Acronym List”)
[6] Sundsvall, Sweden - internationale Fughafen-Kennung
[7] Autokennzeichen für Kreis Stendal, Sachsen-Anhalt