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A collimating element that sets the maximum transmitted particle amplitudes for
all following elements, until the next MAXAMP.
| Parameter Name | 
Units | 
Type | 
Default | 
Description | 
| X_MAX | 
  | 
double | 
0.0 | 
x half-aperture | 
| Y_MAX | 
  | 
double | 
0.0 | 
y half-aperture | 
| ELLIPTICAL | 
  | 
long | 
0 | 
is aperture elliptical? | 
Michael Borland
2001-06-08