Might have just been a translation typo.
Having said that Airbus has surprised me before: Vls, for example stands for "lowest selectable speed". Really? You don't select a speed, you set it. If anything it should be "lowest set-able speed"
Not that I expect the frogs to grasp the subtle difference between "selecting" versus "setting" something, however the translators should have known better.
Try to change it now...impossible.
Mary