Graphic files

Graphic files (filename extension .pic) contain only a drawing transcription; therefore they are always connected with the pertinent coordinate files of the identical name. After opening a graphic file, a coordinate list is also automatically loaded into the memory (even if not displayed in the window). The advantage of this method of graphic creation is especially the fact that the same coordinate lists are used for calculations and for drawing and all changes show automatically in the drawn plan. Even when the situation related to the points has already been drawn, you can arbitrarily change the coordinates (for individual points as well as collectively for the entire file, for example by transformation from the local system into the main system), and the projected plan accepts such changes without the need of intervention. Also, using only one coordinate system saves room in the memory and on the disc.