Fun Project showing how to:

• Handle drag and drop events 
  • Check 'OSTrigger_SetupImageList' for the dragstart event, where we set the id of the element to be on DataTransfer and 'OSTrigger_SetupTierList' for the dragover and drop events.
• MutationObserver API
  • Check 'InitTierList' and 'InitImages' JS blocks on the OnReady Events on the Apps blocks
• Print specific HTML elements
  • Check 'Print' JS Block. It basically removes everything from the page except what you want to print (based on it's Id), call the print, and afterwards it resinserts everything back.

Based on https://tiermaker.com/