The instructions at How to Create a File Shortcut in Android outline how to add a shortcut to your desktop using ES File Explorer. The shortcut can either be to a folder or a file. It seems to work for LAN folders as well, but I can't seem to create a shortcut to a network file. The context menu doesn't include the option to "Add to desktop". Is there any way of doing this - or is it yet another example of Google deciding that we're way too stupid to use our devices how we want?