& vadd()
 
  Syntax: vadd(<vector>,<vector>[,<delimiter>])
 
  Returns the sum of two vectors. A vector is a list of numbers 
  separated by spaces or a delimiter, and may be up to 20-dimensional.
 
  Example:
 
  > think vadd(1 2 3,4 5 6)
  5 7 9
  > think vadd(0|0|0,1|2|3,|)
  1|2|3
 
	See Also: vmul(), vdim(), vsub(), vunit(), vmag()