2 2 50 0 Edit Model
 Information about the model is stored in four
files:
1. The Parameters file is a list of independent
parameters used in the model.
2. The Constraints file describes the parameters,
which are expressed from other ones.
3. The Particles file contains the table of
particles and description of their properties.
4. The Lagrangian file is a list of vertexes of
interactions.
  Select the corresponding item to view/edit its
contents.
  When you  leave this menu, CompHEP checks the
model. If a certain file is changed, CompHEP asks
you: "Save correction ?". For the case of
negative answer CompHEP forgets your changes. If
the answer is affirmative, CompHEP begins to check
the model contents. If no error is found, you are
returned to the previous menu. Otherwise an error
message appears on the screen and  exit from
the menu does not occur.