procedure userDialog

Create a dialog box for QFitsView

userDialog function, labels [, types [, values] ]

title:   A string with the dpuser function to be executed. This will be shown also as the caption of the dialog box.
labels:   A string array with the description of the parameters to be entered
types:   Optional types of the arguments (as a string array): Can be either int, real, fits, or anything, in which case it will be treated as a string.
values:   Optionally, default values for the entries can be given (as a string array).

Create a dialog box for the velmap function:
   userDialog "myvelmap", ["cube", "wavelength center", "fwhm"], ["fits", "real", "real"], ["", "2.13", ".001"]