Why are vertical scrollbars on the right side of windows?
In the earliest PARC window systems, Smalltalk and Interlisp-D, scrollbars were on the left, then the ViewPoint and GlobalView environments of Xerox Star workstations moved scrollbars to the right.
These late 1990s papers explain why but the first one has an inaccuracy: on Interlisp-D scrollbars couldn't be made to appear on the right.
https://alandix.com/academic/papers/scrollbar
https://www.alandix.com/academic/papers/scrollbar/scrollbar2.html
@amoroso
McCLIM has a parameter that allows to request placing them on the left.