[R] Regression output labels

[rwatkins@cornerstonelp.com]

Hello to all-
 	1.	When I run a regression which implements the augmented Dickey-Fuller
test, I am confused about the names given to the regressors in the output.
I understand what "xGE" stands for in a standard "lm" test involving an
independent variable GE for instance, but if I lags and or differences are
included in the model, what do the following "output" stand for:
	 	"xlag(x,-1)GE"
  		"xD.GE"
  		"xD.lag(diff(x), -i)GE"
  		"xD.D.lag(diff(x), -i)GE"
	Thanks for the clarifications -- I don't want to "misspeculate" on the
actual interpretations, here...

Also...
	2.	When an Engle-Granger test is run on multiple independent variables,
only one cointegration vector is returned.  Can one tell "which vector" --
or what two variables' relationship  -- is being identified for the R
output.  Likewise, if I run a Johansen test, does R "tell me" specifically
which pairs of variables are cointegrated or do I just get the rank?

	Thanks to all for your time and consideration.