This command opens the BookVars file for editing. If the BookVars file does not exist, a default file is created. For information about the format of a BookVars file, see BookVars File. The file opens in the editor type specified when you originally created the BookVars file with the Generate BookVars File command; the internal editor (a FrameMaker dialog box), or an external editor (Notepad by default).
Generally, when editing a BookVars file, you will focus on the sections that define the variable groups. Each entry is made up of a variable name and definition. This is represented in the BookVars file as the following:
Where, VARNAME is the variable name and VAR DEFINITION is the definition. After generating a BookVars file, all exported variable will appear in this format. If you change the definition of a variable, then import that variable group into the book (with the Import Variables command), the new definition will replace the old one. If you add a new entry (variable name and definition) this variable will be added to the files when imported into the book. Removing an entry (both name and definition) it will have no affect on the files when imported into the book. This means that you can delete all variable entries from the BookVars file that you want to remain as they are. To delete variables from files in a book, use the DeleteVarCode parameter as described in the BookVars File topic.
For your convenience, the definitions in each variable group are split into two sections, one for user variables and the other for system variables. This separation is purely for your ease in organizing. Feel free to delete any or all of the variables from this section as needed. When generating a BookVars file, you can choose to include the system variables, the user variables, or both.