Gets a command to enable (or disable if it is enabled) a different page header and footer for the first page of the current section.
readonly setDifferentFirstPageHeaderFooter: SetDifferentFirstPageHeaderFooterCommand
A SetDifferentFirstPageHeaderFooterCommand object that provides methods for executing the command and checking its state.
You can invoke this command by calling the execute method.
The execute method checks the command state (obtained using the getState method) before executing, and decides whether the action can be performed. The execute and getState methods are members of the SetDifferentFirstPageHeaderFooterCommand class.
The command applies the first page footer/header settings to all sections that will be created after the current one.