A workgroup organized network manager for controlling the operation of individual workstations within a computer network. The workgroup organized network manager organizes workstations into workgroups and controls the distribution of information to each of the workstations within a defined workgroup....http://www.google.com.hk/patents/US5832511?utm_source=gb-gplus-share專利 US5832511 - Workgroup network manager for controlling the operation of workstations within the computer network 
