allow copy-paste between OS X and Windows VirtualBox
Default VirtualBox keyboard configuration didn’t let me to copy-and-paste between OS X programmes and the VirtualBox VM.
Setting Shared Clipboard parameter to Bidirectional doesn't help
How to configure it?
Install the Virtual Box Guest Additions, reboot your VM, set your Shared Clipboard, and try again. You should search for an .dmg / .iso image file called darwin. That contains the Virtual Box Guest Additions.