balisage

Balisage is, most commonly in military applications, the use of dim lighting to enable navigation while not giving away one's position to the enemy.It can also refer, in computer applications, to the use of markup to enable document processing while not "giving away" one's data to proprietary software programs from which it might be hard to extract the data later. This usage may have originated in the fact that the French version of the ISO standard defining SGML, translates the title thus: Information precessing - Text and office systems - Standard Generalized Markup Language (SGML)
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n. beacon, lighthouse, guide, mark, indication

The marking of a route by a system of dim beacon lights enabling vehicles to be driven at near day-time speed, under blackout conditions. 1/2/73

Marquage d'un itinéraire à l'aide d'un système de feux atténués qui permet ainsi de conduire les véhicules en éclairage "black- out" sensiblement à la même vitesse qu'en plein jour. 1/2/73