\rm - LaTeX roman switch command

x \rm y

Renderer support

Package	MathJax	KaTeX	XeTeX
`base`	MathJax: Full	KaTeX: Full	XeTeX: Full
`textmacros`	MathJax: Full	KaTeX: Full	XeTeX: Full

Syntax#

\rm

Takes no arguments. Same argspec in base and textmacros. Reading argspecs

Legacy switch; prefer \mathrm{d}x.

{\rm d}x

{\rm Hom}(A,B)

base

{x \rm y} z

textmacros

\text{\rm x}

Package	Signature	Allowed mode	Notes
`base`		math	Legacy math-mode declaration for switching subsequent symbols in the current group to upright/roman.
`textmacros`		text	Legacy declaration that switches following text to upright/roman styling until the current group ends.

TeXForm parses this entry as declarative syntax; the package determines its argument specification.

\mathrm{#1}approximate
Prefix command alternative for math mode
\textrm{...}approximate
\textrm is a command with arguments, whereas \rm is declarative.
{\rmfamily ...}exact

`base`
Input	Case	MathJax	KaTeX	XeTeX
`{\rm a}`	Positive · baseline	Pass	Pass	Pass

`textmacros`
Input	Case	MathJax	KaTeX	XeTeX
`{\rm a}`	Positive · baseline	Pass	Pass	Pass