fix_modify AtC mesh read <filename> <f|p> <f|p> <f|p>
 fix_modify AtC mesh read myComponent.mesh p p p  
  fix_modify AtC mesh read myOtherComponent.exo  
Reads a mesh from a text or exodus file, and assigns periodic boundary conditions if needed.
periodicity flags are false by default
 1.6.1
 1.6.1