Meaning of backreference | Babel Free

Definitions

An item in a regular expression equivalent to the text matched by an earlier pattern in the expression.

Examples

“The third part of the regular expression, \1, is the backreference and tells ColdFusion to refer back to the first subexpression[…]”

“Path traversal occurs when directory backreferences are used in a path to gain access to the parent folder of a subfolder.”

CEFR level