@TheRealMasochist The official release of TL 2023 is scheduled for tomorrow tug.org/texlive

But I am now on March 19, 2023. :-)

@TheRealMasochist Well, then you still have still at least 12 hours of march 19th to wait until you can call it delayed :)

@PhelypeOleinik OK. Thanks.

@TheRealMasochist That was a (maybe not so good joke), sorry. More seriously, the release schedule of TeX Live is an estimate. It usually happens according to plan, but delays are possible

@PhelypeOleinik No problem. :-)

@mickep Thanks for the offer. I was wondering if the book could be a recommendation for a beginner in LaTeX, for example an engineering student who writes a technical report.

@UlrikeFischer ooh sloths are good at photos

@Dr.ManuelKuehner I guess that a beginner could spare some money and look in one of the free docs around. Perhaps "The not so short...". Also, @daleif's cook book feels better structured in my opinion, (and it is in beautiful Danish, cannot be bad), and in particular it explains the math better.

@UlrikeFischer yaaaaay

@mickep Thanks! Didn't know about the book of Daleif.

awwww twitter.com/TheMedicalTalk/status/1637481722949558273

@mickep @Dr.ManuelKuehner I've never felt that the Not so Short Guide was really very good, although I admit I haven't looked at it recently. It's a shame that Herb Voß's Math Mode document got removed from CTAN. It really was a great resource specifically for math typesetting. A former student of mine produced this nice introduction aimed at linguists, so not much on math, but lots of good basic introductory stuff too.

@AlanMunn Nice. Is this the Voß document you have in mind?

@mickep Yes, exactly. It's just not so easy to find as before.

@AlanMunn Thanks for your input! Herbert's math book was one of the first Latex books that I read from cover to cover and I loved it. Thanks for the additional reference of your student!

@UlrikeFischer -- That sounds like a very energetic sloth! Such excitement!

@DavidCarlisle I'm afraid your answer to this question is pretty opaque (at least to me). Could you maybe add a document that shows how the code you suggest would come about?

@AlanMunn yes OP said same:-), give me a minute, I'll add something...

@AlanMunn better?

@DavidCarlisle Marginally? I still don't think I understand what's going on here (granted I haven't looked at the documentation of the feature at all). I think the answer in its current form will still confuse people because there's a lot of underlying assumptions (e.g. the key handling itself as you mention in the comments.)

@AlanMunn yes but giving an explicit working kv set of definitions is far more complicated than the =feature which just makes [foo] appear as #2 is short-text=foo while [a=b]appears as #2 is a=b

@DavidCarlisle quack

@PauloCereda dinner=duck

@DavidCarlisle oh no

\[
\left.
    \begin{gather*}
        d(uv) = (du)v + u(dv) \\
        [\hat{A}, BC] = [\hat{A}, B]C + B[\hat{A}, C]
    \end{gather*}
\right\} \text{Similiar}
\]

Instead of the environment gather* , what should I use here to keep the equations horizontally center-aligned?

@raf just guessing, does gathered do what you want?

@mickep Thank you. That's what I wanted.

Finally! Another palindrome: 86,768