Old BEA term for navigation log ( turning points, distances, mag tracks, fuel remaining, distance to go, safety alt, eta,ata,actual FL, fuel plan etc) Also had a graphical picture of the route. BEA practice was to annote the PLOG when Aids were tuned and then identified IN COLOUR. Red V and A and Green V and A. So young copliots had a multitude of coloured ball points or one of the new fangled multi coloured ones.