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How do you place the indices of e.g. resistors in an electrical network?
For $R_1$, $R_2$ (resistor values): here the 1 and 2 are up (roman).
So should you place $R_A$ or place R_\text{A}. In most books i see R_\text{A}, but i have the impression most books always have the indices up, but I also saw others.
I currently put all the subscripts in non-italics (like in the books), but it does create a lot of typing the \text{}
Is there a workaround, since default most indices are up and not in italics...

MrI2C
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    It's probably a matter of taste; see this question for more discussion. I usually use whatever the math mode is doing, like $R_A$, out of lazyness. – Rmano Mar 10 '24 at 17:20
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    You could define: \newcommand*{\sub}[1]{_{\textnormal{#1}}} to use R_\sub{A}. And if you later prefer, e.g. \mathrm or \textup or even \text you can change the definition of \sub. – cabohah Mar 10 '24 at 17:49
  • Here you can not only find how to make all subscripts in up font, but also how to define additional commands or actives (e.g. ↓ as replacement of _ but with up font). – cabohah Mar 10 '24 at 18:03
  • \text does not ensure upright, it will produce italic in italic regions, also _\text{...} should be _{\text{....}} , _{\mathrm{A}} would guarantee upright A – David Carlisle Mar 10 '24 at 20:46

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