If you press the / character, only the records that are not tagged will display:
The tagged Kansas City record for Zantigo does not display. Press the / character again to put him back on the display.
To go from tagged records to un-tagged records, press the \ key (tag display) and then press the / key (un-tagged display).
The program saves your tag marks. So, when you leave a program and come back later, your tagged records are still there.
Tagged records are local to each PC, so everyone can tag for their own purpose — Cool.