# KaTeX display mode environments not working?

I tried to use the align environment, but is does not work in RemNote:

\begin{align}
a&=b+c \\
d+e&=f
\end{align}


Even though it is supported in KaTeX, it looks like it is not implemented in RemNote.

The array environment works, but not the align environment. Am I doing something wrong or it is not implemented?

(Moved your post to a new bug report.)

Yeah, I noticed something similar earlier. In the KaTeX docs it says:

The auto-render extension will render the following environments even if they are not inside math delimiters such as $…$ . They are display-mode only.

I think the display mode in RemNote is just never used, even if toggling block mode. E.g. the equation, gather, CD environments also don’t work.

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If the cause is being in non-display mode, then the following environments should work.

gathered , aligned , alignedat
… do not need to be in display mode.
Supported Functions · KaTeX

So align can be replaced with aligned, @hugo 's code will be:

It seems working, though this might indicate that equation and CD is not supported on RemNote I guess?

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It worked perfectly! Thanks!!

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