Hi Just been trying to add a bit of colour and have a few comments, questions. symbol-colour group cave-centreline [0 100 0] # only affects the centrelines. It does not affect the colour of survey stations or survey station labels. It seems to me that stations are part of the centreline (otherwise why make it 'group centreline' when 'line centreline' would suffice?) and so the group setting should affect all items associated with the survey stations and centreline. It should behave similarly for surface surveys. Adding. symbol-colour point cave-station [0 100 0] # does not affect the colour of survey station points, and I would expect it to. symbol-colour point station [0 100 0] # changes the station point colour as well as entrance 'omega' symbol and any text associated with it. symbol-colour point station-name [0 100 0] # changes the station-name label colours. The later two do not distinguish between surface and cave surveys however. Comments? Are these features, bugs, works in progress? And this next one is one I've been too lazy to research. Is there a way to control the colour of gridlines (both in plan and elevation) and the labels associated with each? I have managed to do it for plan gridlines with metapost and have been meaning to research for the elevation gridlines & plan and elevation grid labels but have not got around to it to date. Perhaps symbol-colour special grids [80 80 80] or symbol-colour group grids [80 80 80] would be a convenient way to implement it? Bruce