In other words, rather than rely on a record Length or Delimiter specified on the node itself, one of the broker's parsers should be used to decide where one record ends and the next begins.

In other situations the total length of a fixed record may be just slightly longer than one-half a 4 KB page, so then only one record can fit on a page.

However, a record of variable length can possibly be updated to a length that no longer fits on the original page, and so it must be moved to another page.