Hola¡ I`ve written an ASCII dxf file, with the ENTITIES section only, and with only 2 lines, just like an example published in thr reference guide of AutoCAD2004. I can read this file with AutoCAD but, if i have another drawing opened when i open mine, even if the first drawing is empty and i didn´t run any comand, if i want close my file Autocad adviced ne that a comand is on and i must finished first this comand, why?, it´s not apparently true. Not in command line. Could someone help me and tell why o what kind of problem is there? Thanks a lot. Till the next.