is_frame (name: STRING)
Returns True if the frame exists. The window containing the frame does not have to be visible to access the frame. However, if the frame is in a conceal that is not displayed, then the frame is not available.
load_item_in_frame
window and frame functions
Frame Manager
script show_something is if is_frame ('main') then load_item_in_frame ('title_page', 'main') end end