[R] What is the difference between typeof and storage.mode?

[bluesky315 at gmail.com]

S Programming by Venables and Ripley (2000) says on page 8, "R objects
have another way to give information using the function
\tttext{typeof}, which often gives the same information as
\tttext{storage.mode}." It implies that there are some differences
between typeof and storage.mode.

However, according to ?typeof and ?storage.mode, it doesn't seem to be
so. Could somebody let me know if there is any difference? If there
is, what the difference is?