\page ExampleTestEm0 Example TestEm0

  This program is not a simulation. It prints the cross sections and stopping
  power used by the standard electromagnetic package, via G4EmCalculator
  which extracts these data from the PhysicsTables.
	
  The program can be used in batch or interactively.	
 
  - execute TestEm0 in 'batch' mode from macro files :
```
% ./TestEm0   TestEm0.in
```
 		
  - Interactively, a typical sequence will be :
```
% ./TestEm0
....
Idle> /run/initialize
...
Idle> /testem/det/setMat Silicon
Idle> /run/setCut 100 um
Idle> /gun/particle e-
Idle> /gun/energy 10 MeV
Idle> /run/beamOn
```
	 
  The last command triggers BuildPhysicsTable() and executes the program.
  
  Macros provided in this example:
  - muon.mac: muon incident
  - ion.mac: generic ion incident
  - xenonGas.mac: illustrate gas definition    
   
## DirectAccess
			    
  DirectAccess.cc is a small batch program which shows how to compute the same
  basic data directly from the processes (indeed the models).