* doc/org.texi (Field coordinates in formulas): Rephrase and add an
example with a Lisp formula to copy from remote table.
* testing/lisp/test-org-table.el (Comments): Adapt comment.
(test-org-table/copy-field): Add reference to
`test-org-table/remote-reference-access'.
(test-org-table/remote-reference-access): Add reference to
`test-org-table/copy-field'. Differentiate between Lisp formula to
copy and Calc (or Lisp) formula to calculate.