[fsrmw_tudd]

Well, I have a bunch of old posts with the syntax

[latex]$formula$[/latex]

from a 10 years old database here and [S]don't want to[/S] cannot rewrite that.

I hoped that the settings option within the mod would do the trick since you declared it as a feature.

The formulas are compiled by creating a small tex file and running the native LaTeX program throughout it. You can choose to wrap the formula with the standard dollar ($ ... $), the align or gather amsTeX environments. The standard dollar is recommended since the baseline hack works better with it, but the gather environment allows to create multiline equations using the \\ separator.