While revising the documentation for proportional spacing in the NR I stumbled upon
``` \override PaperColumn.used = ##t ``` that gets mentioned without any explanation. Looking up some discussion in `lilypond-user` from 2006 https://lists.gnu.org/archive/html/lilypond-user/2006-12/msg00107.html it seems that it was necessary then. However, the examples given in these e-mails seem to work just fine with 2.25.13 if I omit setting the `used` property. Does anybody know more? Can someone confirm this observation? Werner
