mb_view is a graphical front-end for the contouring program mb_cont. The program is written as a Tcl/Tk (Version 8.0) script which sets up a viewing window with command menus.
The menus provide an easy way to set file names and plotting options if values other than the defaults are required. On selection of the Plot|Generate-GIF-Image menu item, a command-line is assembled and mb_cont is invoked to do the actual work of reading the data file and generating a GIF image. The image is written to a file and can be subsequently displayed in the viewing window via the Plot|Refresh-Display menu item. The displayed image is not automatically refreshed.
There are a number of options that include selection of the contoured variable, ranges and features such as flood filling. These should be fairly self-evident but further information can be gleaned from the documentation for mb_cont.
When you are happy with the plotting options, a Postscript image can be generated and written to a file.