This is a read-write character string object located alongside the edotdiscovery branch of the MIB, described simply as holding a character string value. Because it is writable, an administrator or management application can set this object, presumably to trigger or influence a refresh of the discovery data maintained under edotdiscovery. As an illustrative example, writing a specific string to edotupdate could be a mechanism to signal the discovery agent to re-scan and update its edotdiscoveryObjectTable.