Lync_2010_Conferencing_Quick_Ref_Card.pdf - Quick Reference about conferencing
Lync_2010_Instant_Messaging_and_Presence_Quick_Ref_Card.pdf - Quick Reference about instant messaging and presence
Lync_2010_Sharing_and_Collaboration_Quick_Ref_Card.pdf - Quick Reference about sharing and collaboration
Lync_2010_Voice_and_Video_Quick_Ref_Card.pdf - Quick Reference about voice and video