TEC, can anyone use small words and explain this to me?

"Fred E. Pate" wrote:

Now at VFR towers (class D airports) in the Bay Area (and probably in the LA
area, too) they usually like you to prefile (because otherwise the ground
controller has to get on the interphone with a grumpy and busy approach
controller who then has to enter your flight plan). If you prefile, you can
tell the FSS briefer that you want "tower enroute routing" and they usually
don't go beyond the destination entry in the flight plan form. But that
doesn't matter to the route itself. Although not published in the A/FD for
the Bay Area, the routes are fixed and published within ATC.

Within the last year or so, Oakland FSS has put some information on their
web site regarding Bay Area TEC routes.

http://www1.faa.gov/ats/oakaifss/TEC/TECInfo.htm

It's not exhaustive, for instance I'd love to know in advance what is the
preferred IFR route from VCB to PAO.