Anju customizes the Text menu using the hook function anju-main-menu--reconfigure-text-mode.
Add this hook function to anju-reconfigure-main-menu-hook to enable customization of the Text menu.
If customize-variable is used to configure anju-reconfigure-main-menu-hook, then a checkbox interface to enable anju-main-menu--reconfigure-text-mode is displayed.
Note that the Text menu is only displayed when the current major mode is derived from text-mode.