class AliEveFMDLoader: public TEveElementList

 Get the singleton instance.  If the instance has not been
 instantised yet, it will be after this call.

 Constructor
 Parameters:
 @param name     Name of the folder.
 @param useBoxes Whether to use boxes or Quads for the signals
 @param old      Whether to enable reading old RCU data format

 Destructor

 Called when the element should be removed from the list. We
 overload this to allow clearing of signals.
 Parameters:
 @param el Tree to remove from.

 Called when the element should be removed from the list. We
 overload this to allow clearing of signals.
 Parameters:
 @param el Parent to remove from.

 Make a digit set.  The type of digit set depends on the setting
 of fUseBoxDigits.  If this is true, we return a TEveBoxSet,
 otherwise a TEveQuadSet
 Parameters:
    name	The name
	nstr	The number of strips
 Return
    newly allocated digit set

 Clear signals of some type.
 Parameters:
 @param type Type of signals to clear
     Type can be one of
     - All    All signals
     - Hits   Hits
     - Digits Digits
     - Raw    Raw
     - ESD    ESD

 Find a digit set corresponding to the passed parameters.  If it
 is not found, one is created
 Parameters:
 @param type   Type of data
 @param d      Detector
 @param r      Ring
 @param s      Sector
 @return a digit set

 Add a signal to a digit set
 Parameters:
 @param type   Type of data
 @param det    Detector
 @param rng    Ring
 @param sec    Sector
 @param str    Strip
 @param signal Signal value
 @param min    Minimum of this kind of signal
 @param max    Maximum of this kind of signal
 @param ref    Reference object

 Add a signal to a digit set, with known (x,y,z) coordinates
 (this is for hits)
 Parameters:
 @param type   Type of data
 @param det    Detector
 @param rng    Ring
 @param sec    Sector
 @param str    Strip
 @param x      X coordinate
 @param y      Y coordinate
 @param z      Z coordinate
 @param signal Signal value
 @param min    Minimum of this kind of signal
 @param max    Maximum of this kind of signal
 @param ref    Reference object

 Add a digit to a digit set.
 Parameters:
 @param signals Digit set.
 @param x      X coordinate
 @param y      Y coordinate
 @param z      Z coordinate
 @param w      strip pitch
 @param scaled Scaled value
 @param value  Signal value
 @param ref    Reference object

 Modify color of module according to the summed signal

 Summarize the signals in the all the modules, and modify
 the module colour accordingly

 check if we shoul re-add ourselves to the current event node

 Load and display hits

 Do the actual display of digits
 Parameters:
 @param type What to show
 @param digits The digits

 Load and display simulated digits

 Load and display raw digits

 Load and display ESD information