other data can be entered as part of the data file including the distance to the next show and other such information which determines a total time of transport moreover unpacking information can be determined to decide how long it will take to unpack the truck all of this information can be correlated by the computer into a form which determines the latest possible time when packing could begin another feature is the formation of production information labels indicating for example the area to which the package will be unloaded fig5 shows a typical virtual image of a stage and the lighting equipment the stage 500 has a point of reference x y z the light fixtures are located about the stage 500 in relation to the point of reference the light fixtures can include any kind of light fixtures including lsd icon u2122 501 lsd washlight u2122 502 special effects lights 503 and other types of light fixtures lsd icon u2122 lights 501 are located at x 1 y 1 z 1 and x 2 y 2 z 2 lsd washlight u2122 502 are located at x 3 y 3 z 3 and x 4 y 4 z 4 special effects lights 503 are located at x.