Drag And Drop To LaunchPad

You can drag and drop a document to an app in the Dock to open it with that app. But it doesn’t appear that you can drag and drop to LaunchPad in the Dock, and then continue dragging inside LaunchPad to select an app. But you can. The trick is to wait for a second or two while the document is hovering over the LaunchPad icon. Then LaunchPad launches and you can drag to the app. You can even then drag to the edges of the screen to go to another page inside LaunchPad.