Typesetter's name for a "regular" (pre-computer-era) slash mark (/) that associates related terms. On computer QWERTY keyboards, commonly found to the right of the key for a period. The virgule key + shift indicates a question mark.
Here's one use of the virgule: Most of the audience found the play racy/dirty, not just racy.
A backslash used when more than one word is feasible in a sentence.
You may choose red and/or blue.
He/She must follow instructions.