command if a default setting needs to be 
changed before the problem description is read-in. They can be used 
after the &quot;read data&quot; command if the user wishes to change a 
setting before the next &quot;run&quot; or &quot;minimize&quot; command 
is used. Other than these restrictions, commands can generally appear 
in any order in the input script, although some commands require others 
to have been previously specified.</P>
<P>
Each LAMMPS input script also contains one or more &quot;run&quot; or