Rd_db(package, dir, lib.loc = NULL)man
with R documentation sources (in Rd format). Only used if
package is not given.NULL. The default value of NULL corresponds to all
libraries currently known. The specified library trees are used to
search for package.Rd_db builds a simple database of all Rd objects in a package,
as a list of the results of running parse_Rd on the Rd
source files in the package and processing platform conditionals.parse_Rd