Use Ctrl+r+Shift (or Ctrl+F5) to reload the page, overriding cache. This shortcut is useful after each new release of the MI.
You can zoom in/out the data flow by pressing CTRL / ⌘ + scroll
Hold Shift + mouse click: select or deselect multiple nodes.
Hold Shift + select area by mouse: select multiple nodes.
Click on the blank space workspace data flow: deselect multiple nodes. Drag and drop selected nodes.
Open configuration in a new window by pressing CMD/ CTRL+left click.
Read more: about shortcuts in the Windows system here.
Read more: about shortcuts in the Mac system here.