I am uncertain about how to acknowledge the fact that $ can do partial
matching in the space of about 30 characters. One option is this:
x[["name"]] column named "name"
x$name same as above (almost always)
Is that better or worse than ignoring this issue, or is there an even
better phrasing?
As per the other suggestions, I fixed the matrices indexing info,
pkg::foo() now has "not usually required"; and <<- now is explained
as "Left assignment in outer lexical scope; not for beginners"
Plus, I've been able to get in touch with Tom Short. :-)
Thanks to Jeff Newmiller,Dennis Murphy, and Peter Dalgaard for these
helpful suggestions and corrections!
regards,
m@