A method for increasing the rate of shear rehealing of fluids made with cationic, zwitterionic, and amphoteric viscoelastic surfactant fluid systems by adding an effective amount of a rheology enhancer package containing, for example a polyethylene glycol-polypropylene glycol block copolymer and a polynaphthalene sulfonate. Optical circuits or waveguide patterns can be recognized easily by visual inspection. The advance bolt stays in its advance position upon screwing back the screw thereby that a connection element activated by the displaced advance bolt causes a connection between the lower structural part and the longitudinal rails. Implementing undoing prior revisions preserves the revision history for a file, in case there is a need to access the undone revisions at a later time. Selection areas of the proof sheet can be marked to indicate the image files to be printed and then optically scanned to detect the images selected for printing, or the image specifiers can be entered into the printing system to specify the images selected for printing.