Here is what they mean:

• Height and Width are precomputed as the size of your largest image, with an additiona 120 lines added to the height if you are not using always torn-off controls (see below). This is the size of the window that will appear when running your lesson.
• Server hostname the internet name of the machine to use as the primary VISITview server. The visit.bat and the visitm.bat files will refer to this host.
• Alternate server(s) names zero or more other machines to use as backups. Separate machine names with a comma, and use the form: cira@visit.cira.colostate.edu for each one. The characters before the @ sign will become part of the batch filenames (e.g., visit_cira.bat) -- therefore, do NOT use any special characters!
• Server group is the unique identifier for this lesson and often this version of the lesson. We recommend something like: mylesson-070402. This value is used by the VISITview server to insure that everyone is using the same lesson...therefore, it is very important to put in a unique value for the Group (for example: "precip-type-16nov02")
• Require ID may have a value of "true" or "false". If "true", then students will receive a prompting when they start up your lesson, to enter their name or office identifier.
• Pause on last and Pause on first control the behaivor of animations. If you want a pause put on the first and/or last frames, enter the number of milliseconds (0 = none).
• Background color is the color to use for the background, in the form: #RRGGBB (red, green, and blue in hexadecimal). For example: #FFFFFF is white, #800000 is dull red.
• Foreground color is the color to use for the foreground -- usually lettering, in the form: #RRGGBB (red, green, and blue in hexadecimal)
• Enhancement table file the name of the file to use for the enhancement (color) table. The default is enh.tab.
• Size of text annotation the point size of the font to use for text annotations. The size may also be changed "on-the-fly" by putting the point size in brackets at the beginning of the text (e.g., [36]My big text).
• Root name of batch files. By default, the root name of the batch files for starting VISITview lessons is "visit". You may change that by entering a value here: NOTE: No spaces or other special characters should be used!!
• Transparency value
• Overlay Transparency Value is the red-green-blue value that will be treated as transparent in an overlay image. You may specify a range (shown in the example: xd0d0d0,xffffff).
• Allow control tear-off may be either: true, false, or always to specify how controls will be presented to the students.
• Phrases for text-on-screen is a comma-separated list of words or phrases that can be used to 'seed' the text annotation type-in. This saves lots of fumbling and typos during a lesson!
• Save Java Runtime in Lesson will cause the JRE for Windows(tm) to be saved in the lesson ZIP file. Normally, this should be left checked (that is, include the JRE).
• Create Instructor Notes template file check this if you would like a template file for your instructor notes to be written into the ZIP file. This file will be named InstructorNotes_template.html. It will contain page "name anchors" and some other templating for you to use to create the actual InstructorNotes.html file to include in your lesson. You will need to use an editor for this, and then "Attach" it to your lesson's ZIP file later (using the Lesson Builder's "File->Attach file" menu choice, prior to re-saving the lesson).