code: public Message5WH_Builder addHow(Object ...how){
  		if(this.how==null){
  			this.how = new StrBuilder(50);
  		}
  		this.how.appendAll(how);
  		return this;
  	}
docs: Adds to the How? part of the message.
  If the argument is null, no change will be done.
  Otherwise if nothing was set to How? yet, the given argument will be used as initial value.
  If not, then the argument will be appended as is w/o any implicit separators.
  @param how additional information for How?
  @return self to allow chaining