Anyone know how to do a "tag search" ?

"mikewu2u" <[email protected]> Sat, 10 Nov 2012 04:38:11 -0000
Newsgroups gmane.recreation.radio.hardware.yaesu.vr-5000
Message-ID <[email protected]>
I found by pressing the "F" key and then the "width" button I get "TAG search". I can enter a letter (or letters) but from there any key I press just  cancels the whole thing, and sends me back to the main screen. I didn't find anything in the manual about this feature. Anyone??