TRAX online documentation
TRAX is available in the versions
-  
pro (production version, frozen)
-  
new (developing version)
-  
old (obsolete version, as a fallback)
-  
test (test version)
For the biophysics accounts the necessary shell variables are set at login.
To select a version other than thepro default,
use the provided versioning shell script, e.g.
   . traxenv -new  # switch to "new" version
   . traxenv -test  # switch to "test" environmnet 
Mind the dot, it's significant.