Sorry, I'm italian and my English is very bad! I have idl, the 6.0 version, and I have some problems with colors and with the command close. 1) In a programm I use these commands loadct,12 ... set_plot, 'x' device,deco=0 WINDOW,0,color=0,XSIZE=600, YSIZE=450, TITLE='...',xpos=0,ypos=1,ret=2 ... plot,xV,yV,psym=4,symsize=1.5,$ xtitle='V-I',ytitle='V',xcharsize=1.2,ycharsize=1.2, $ title='Diagramma V,V-I',charsize=1.5,YRANGE=[25,-25] oplot,x,y,color=100 There must be some points and a line I changed many colors but the color of the line is ever in grey tones, and not blue or green. I don't know where is the problem. 2) When I put the command line 'close,/all' in a programm it doesn't work, and then I must exit from idl and open it again to start the programm. Can you help me? Thanks