"LR mode" is short for "left-to-right mode". LaTeX is in LR mode when processing text as a sequence of words, without breaking it up into lines and pages. The \mbox command causes LaTeX to enter LR mode.
"LR mode" is short for "left-to-right mode". LaTeX is in LR mode when processing text as a sequence of words, without breaking it up into lines and pages. The \mbox command causes LaTeX to enter LR mode.