2 9 76          Table of structure functions
             This table consists of two fields:

1. "Name" for an identifier of the structure functions set. It may 
   contain up to 24 characters. The first character must be a letter, 
   others may be either letters or digits; CompHEP identifiers are 
   sensitive to the case of characters. But any two identifiers must be
   different after rewriting them in low case.
   Reserved names are "i" (imaginary unit), "Sqrt2" (sqrt(2)),
   "p1","p2","p3",... (particle momenta), "m1","m2","m3",... (Lorentz 
   indexes of particles), G5 (the gamma-five Dirac matrix).

2. "Number" is an inner index of the set.