"`" ASCII code 96. Common names: left quote left single quote open quote ITU-T: grave accent grave. Rare: bACKprime INTERCAL: bACKspark unapostrophe birk blugle bACK tick bACK glitch push ITU-T: opening single quotation mark quasiquote. BACK quote is used in Unix shells to invoke {command substitution}. (1996-11-26)