Hi Mikko,
the only cmd in my startup commands is _testToggleRoundPoints and I haven’t modified SelLast in the Aliases list.
Typing sel in the search box of the Settings Editor doesn’t show anything related as far as I can tell.
Hmmm… That shows just how little I remember 
When you mention that I vaguely remembered bringing this command option up earlier this year. Searching Discourse is a piece of cake though: Settings Editor (but I don’t recall much of 2005;-)
But that is about something else, no? When I have selected something when I call this command, I want the outcome to be appended to my current selection. All good. What I’m talking about here is when I have nothing selected, SelLast not only selects the last selected item but also something that was created one or two steps before that.