If I create a shortcut to a folder and drag the shortcut onto the start menu, then the shortcut on the start menu behaves just like any other shortcut - click it to open the folder in explorer.
However, if I drag the folder onto the start menu, then it expands in-situ. If I then copy this shortcut(?) into another location on my machine and compare it to other files/folders, its type appears as "Folder" as opposed to "File Folder" (which is what I get when I choose File->New->Folder.
What's the difference between these two types of folder?
Can I create one of these folders without dragging onto the start menu?
With the help of zildjohn01 I've found out that these are called "Junction Points".