Routine Name:	setfield

Description:	Sets value of field in data structure of specified element.

Usage:		setfield  [pathname] field value [field value ... ...]

		pathname	name of element; if wildcard path
				specification, all elements referred to will
				have their fields set to specified values
				(default: current working element)

		field		field in element data structure to which to
				assign new value

		value		value to assign specified field

Example:	setfield /soma initVm -70.0
		setfield /test[] x 10 y 20 // for all indexed elements test[i]
		setfield x 10		// set value for current element

		genesis >  setfield /neutral_test x 100 y 50
		genesis >  showfield /neutral_test x y 
		
		[ /neural_test ]
		x           = 100
		y           = 50

Notes:		You can define and add additional fields with the addfield
		command.  These may then be set with the setfield command
		just like the predefined fields.
		
See also:	getfield, getfieldnames, showfield
