If you need to identify the location of the RouteStart co-ordinates, you can add the location after the co-ordinates thus
RouteStart ( -11268 14313 52 -454 Mt Ephraim )
No # character is required before the words as above.
Other users such as J W Titus, Mark DiVecchio and Okrasa Ghia have shown techniques to have more than one RouteStart line in the TRK file, though some users have found these don't work on their systems.
It does appear that a list of RouteStart lines such as
RouteStart ( -11268 14313 52 -454 Mt Ephraim )
RouteStart ( -11281 14290 44 -21 Marietta West Yard )
RouteStart ( -11281 14289 -568 336 Tessmocker )
RouteStart ( -11280 14290 -6 414 Marietta Station )
RouteStart ( -11276 14297 10 950 Swik )
will work satisfactorily, RE using only the first RouteStart line. If you wish to use another RouteStart location, simply cut/paste the required RouteStart line to the top of the list before entering RE.
Okrasa Ghia demonstrated a technique that works on his system: I am unable to emulate this on my systems: the route simply doesn't appear on the RE drop-down box nor in MSTS itself. Make a backup and try it: it may work for you.
RouteStart ( -12668 14052 -815 -718 #"Drake" )
_RouteStart ( -12719 14037 37 -288 #"Essex+2" )
_RouteStart ( -12716 14040 717 793 #"Goffs+3" )
_RouteStart ( -12710 14045 446 -878 #"Goffs" )
_RouteStart ( -12709 14044 969 1022 #"Goffs-1" )
Okrasa says "The leading underscore makes MSTS regard the token as a comment thus ignoring it (same as in eng/wag-files). When wanting to change starting position I simply prefix the current one with an underscore and remove it on the one I want to switch to."
NOTE: These modifications will be lost and you will have to restore them from a backup file if you alter the route in "Route Geometry Extractor" or in the "Route Editor - Properties" window. The simulator creates a new file without your modifications under these conditions. When adding new locations, remember to TEST FIRST and then make a new backup file.