Wikinews:Assistant:Add action-test/add-entry/doc

Usage
Inputs:
 * &mdash; name of the table page, ostensibly known to exist.
 * &mdash; non-blank to confirm that the table page exists.
 * &mdash; content of the table page.
 * &mdash; if non-blank, the test page is not a subpage of the table.
 * &mdash; name of the test page to be added to the table, omitting table-page prefix unless not-subpage.
 * &mdash; description of the test page for use in the table.