clear 
clf
disp('Draw white rectangle as a background for contour labels ')
disp('of the currently active subplot and rotates all text objects')
disp('including the contour labels to make thier orientation the vertical one')
disp('USAGE: label_style(backgroundcolor,color')
disp('input arguments are optional, default values are')
disp('backgroundcolor="w"; color="k"')
[cc,hh]=contourf(peaks(50)); clabel(cc,hh);
disp('Press any key')
pause
label_style
