Sure, here's one example I found, for SBGL.
- OTR -
20/09/09 16:54 - 19/03/10 23:59
ACFT TAKING OFF FROM SBGR OR SBGL DESTINED FOR KMIA,KORD,
KATL,SVMI AND KJFK INTENDING TO ENTER AMAZONICA FIR, THROUGH
ROUTE UZ23 AND UL304, IN THE PERIOD COMPRISED BTN 0300
AND 0630 UTC MUST FLY THROUGH THE FLW PREFERRED RTE:
- TKOF FROM SBGR - UW2 BRS UZ24 STM DCT BUVIP (N0122.25/W05913.60)
DCT BVI UL304 ISANI
- TKOF FROM SBGL - UA312 STM DCT BUVIP (N0122.25/W05913.60)
DCT BVI UL304 ISANI
)
(K1470/2009)
Still, I can see it's of a minor importance, but I like to know everything I'm reading. It's the 'section' code.