toggle

In computing, to switch between two settings. In software a toggle is usually triggered by the same code, so it is important that this code only has two meanings. An example is the use of the same character in a text file to indicate both opening and closing quotation marks; if the same character is also used to mean an apostrophe, then conversion, via a toggle switch, for a desktop publishing system that uses different opening and closing quotation marks, will not be carried out correctly.