[R] Simple package question

[Terry Therneau]

   With respect to scripts in the "tests" directory of a package: 
Can they depend on data sets found in the 'data' directory of said package?
	-available by default
	- need to use a data() call
	- need to explicitly attach?

This isn't clear to me from reading the documentation in section 1.1.3 of the
"Writing R Extensions" document.

	Terry Therneau