A new window will be opened on the screen and the user will define the name of the coordinate fields and the limits of the sky region. The only way to remove these constraints is to set to zero all the values of the limits. The user must enter here the name of the first coordinate of the sky zone that he needs to select. First coordinates can be Right Ascension, galactic longitude and so on. The user must enter here the name of the second coordinate of the sky zone that he needs to select.
Second coordinates can be declination, galactic latitude and so on.
Units are degrees. The values must be entered from South to North. The name of the output file that contains the fields selected from the input catalogue. The name of the new catalogue in the Personal Data Base. Otherwise only the output file will be written.