How do I use the save mod

!function(){
const s = document.createElement('script')
s.onload = function(){showInfo('save_loader')}
s.src = 'mods/save_loading.js'
document.head.appendChild(s)
}()

!function(){
const s = document.createElement('script')
s.onload = function(){showInfo('save_loader')}
s.src = 'mods/save_loading.js'
document.head.appendChild(s)
}()