The first item is a help screen, which simply translates the mnemonics of the menu into phrases that explain the functions. The hot keys for the Telescope Function menus are the function keys.
All channels use the same integration length.
Option A is currently the default. Two types of programs are available. Options A and C are single pass programs, i.e., the steps are executed and then the user is asked to select a new group. Option B is an example of a looping program, i.e., one that repeats the same steps continuously. Option D allows the user to build a customized observing program.