"TclRFB is a pure-Tcl implementation of the Remote Framebuffer (RFB) protocol that is used in the Virtual Network Computing (VNC) remote desktop application." [L1 ]
RFB is "remote framebuffer"; think of it as VNC's "platform".
"Create a VNC system with tclRFB" [L2 ]
Zarutian 30. july 2006 23:08 hmm... an simple subrect application might be in order and quite handy when you want to show someone via vnc a part of your screen rather the whole screen. (Implementation notes/ideas: four windows using same technique as spiffy caution edged window as the perimeter markers. Just pipe from an already running VNC server through the application)