Nanoflow as datasource lazy loading

It seems nanoflow as datasource provide lazy loading feature. The reason i think is since nanoflow are run  from browser, so they are triggered when page is finished loading.    can any expert please confirm this.     
1 answers

I can not elaborate is better then Mxtechies does: Often we need this when a tab-list has one or several tab-views that slow the page down. We replace the tabs with buttons here named Section1, 2, 3, and 4, making the views only get loaded after the button getting clicked. We then style the buttons to look like tabs, and all seems the same as before, only now returning control to the user way faster.