character. A string used as tag for the names of the objects.
If of length zero, names of members are used as named of objects. Otherwise
the tag is appended, unless already present in the member name.
ignore.case
logical. If FALSE, the pattern matching used for name.tag is
case sensitive and if TRUE, case is ignored during matching.
check.names
logical. If TRUE then the names of the objects created are
checked to ensure that they are syntactically valid variable names and
unique. If necessary they are adjusted (by make.names) so that they are,
and if FALSE names are used as is.
check.overwrite
logical. If TRUE trigger an error if an exisitng
object would be overwritten, and if FALSE silently overwrite objects.
Value
Utility used for its side effects, invisibly returns a character
vector with the names of the objects created.