Straight (or Boulez) beams

How do you do this?

I think the Boulez font with the short square beams is only available for LilyPond and was for early versions of Sibelius.

You can select straight flags in Engraving options, under Notes.



But the angle of the beams is completely different…

You can replace the glyphs used for straight flags in Library > Music Symbols, assuming you have an alternative font available.