 
  desc: Reset property to it's default value.
       
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  format: reset <propertyName>

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	Special case: A few property might appear multiple times in script.
	              Such as wave_xform of material/technique/pass/tus,
                  param_name and param_name_auto in default_param.

	              If you reset param_name, it will clear all param_name.
	              
	              If you just want to clear single param_name.
	              
	              You can do it like this:
	               
	                 set param_name constantName     
	                 
	              This command will reset only one constant.
	                 