(org-table-column-names, org-table-column-name-regexp)

(org-table-column-names, org-table-column-name-regexp)
        (org-table-named-field-locations): New variables.
        (org-archive-subtree): Protect `this-command' when calling
        `org-copy-subtree' and `org-cut-subtree', to avoid appending
        to
        the kill buffer.
        (org-complete): Removed fixed-formula completion.
        (org-edit-formulas-map): New variable.
        (org-table-edit-formulas): New command.
        (org-finish-edit-formulas, org-abort-edit-formulas,
        org-show-variable, org-table-get-vertical-vector): New
        functions.
        (org-table-maybe-eval-formula): Handle `:=' fields.
        (org-table-get-stored-formulas, org-table-store-formulas)
        (org-table-get-formula, org-table-modify-formulas)
        (org-table-replace-in-formulas): Handle named field formulas.
        (org-table-get-specials): Store locations of named fields.