Changing layouts

[liude]

How would i go about changing the layout for, say, the save menu after a choice has been made? If i use a python block the it initializes with the changed features, but i want it to change to those only after a part of the story has passed. How would i do it? Or rather, how can i create an option on the menu to change its layout?

[Anima]

Since 9.10, you can use the variant variable to switch between different imagemap main menus, but there doesn't seem to be a corresponding variable for the game menus, yet.
Please note that the variant argument for the load/save screen does something different.