When this command is run, a dialog box will appear requesting the stations whose heights one wishes to change.
Either all the stations may be selected or they may be selected graphically. Once the dialog box has been validated, a new window will appear where one has to specify how one wishes to change the height. The new dialog box together with its features is shown below.
The value of the new height desired is entered in Height and whether the height adjustment is to be Absolute or Relative, that is to say, whether it is to be changed to the height actually entered or to be increased with respect to the existing height.