Forgive me if this is obvious:

	I have a frame of data with the variables in each column (e.g.  
Discrete_Variable1, ContinuousVariable_1, ContinuousVariable_2,  ...   
ContinuousVariable_n)

	and I want to create a model using lrm i.e.
	model <- lrm(Discrete_Variable1 ~ ContinuousVariable_1,  
data=lotsofdata)

	Is there a syntax for having all the continuous variables referenced  
in the formula without having to enumerate them all?

	I've seen the ~ . notation but when I try


	model <- lrm(Discrete_Variable1 ~  ., data=lotsofdata)

	I get this error:

	Error in terms.formula(formula, specials = "strat") :
	'.' in formula and no 'data' argument
	

	Any help is appreciated.

-Zak
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