On the survey tree I am still getting blanked or false data (digits missing) reading as the 'From' information (the V and Brg) is you more up and down the tree with the mouse. Looks a bit like Duncan's problem [3] but in a different place. Andrew Atkinson -- Secretary, Cave Surveying Group www.bcra.org.uk/csg c/o 31, Priory Avenue, Westbury-on-Trym, Bristol. BS9 4BZ. England