> The "notation" documentation on setting automatic beam behavior
> <https://lilypond.org/doc/v2.26/Documentation/notation/beams#setting-automatic-beam-behavior>
> contains within it this line (end of third paragraph under "Beaming
> based on beatBase and beatStructure"):
>
> New values [of beatBase and beatStructure] given to a particular
> time signature are retained and reinstated whenever that time
> signature is reestablished.
>
> This line is misleading, if not completely false. For two pieces of
> proof, first note this line from further down on the same page:
>
> When the time signature is changed, default values of
> Timing.beatBase, Timing.beatStructure, and Timing.beamExceptions
> are set. Setting the time signature will reset the automatic
> beaming settings for the Timing context to the default behavior.
>
> Secondly, note this example where switching to another time
> signature and back does not "retain and reinstate" the previous
> beatStructure value:
>
> ```
> \relative a' {
> \time 6/8
> % group (4 + 2)
> \set Timing.beatStructure = 4,2
> \repeat unfold 6 { a8 }
>
> % switch away to any other time signature
> \time 3/4
> \repeat unfold 6 { a8 }
>
> % does not restore previous behavior
> \time 6/8
> \repeat unfold 6 { a8 }
> }
> ```
>
> Perhaps it would be worth deleting the erroneous line, or replacing
> it with a reference to `\overrideTimeSignatureSettings` which could
> be used to change the defaults if desired.
Dan, can you provide an improved wording and/or a fix that I can add
to the NR?
Werner
