Resolve "Modify documentation of momentum tolerance"

beam-command.asciidoc

@@ -110,8 +110,10 @@ NPART::
   The number of macro particles for the simulations
 NSLICE::
   The number of slices per bunch
-MOMENTUM_TOLERANCE::
-  Fractional tolerance to deviations in the distribution compared to the reference momentum at initialisation. If <= 0, no tolerance checking is done (default=1e-2).
+MOMENTUMTOLERANCE::
+  Fractional tolerance to deviations in the distribution compared to the
+  reference momentum at initialisation. If `MOMENTUMTOLERANCE` latexmath:[<=0],
+  no tolerance checking is done (default=1e-2).
 
 [[sec.beam.bibliography]]
 === References

distribution.asciidoc

@@ -352,7 +352,8 @@ To maintain consistency, latexmath:[N] and `NPART` from the `BEAM` command
 In the same way, when using a `FROMFILE` type distribution, the average
 momentum of the distribution must coincide with the momentum specified in the
 `BEAM` command by means of `GAMMA`, `ENERGY` or `PC` attributes
-(see Section link:beam-command#sec.beam-command.beam-energy[Beam Energy]).
+(see Section link:beam-command#sec.beam-command.beam-energy[Beam Energy]),
+according to the parameter `MOMENTUMTOLERANCE`.
 In _OPAL-t_, the given momentum in the `BEAM` command must coincide with the
 z-component of the momentum of the particle distribution in the file.
 On the other hand, in _OPAL-cycl_ the given momentum must coincide with the