Each operation shows values passed in to and returned by the MicroKernel. Input values are marked by <In> and output values are marked by <Out>; each is followed by a number that indicates the sequence in which the operations were processed, so that <Out> 0016 is the result of <In> 0016. The Opcode field shows the operation code performed; the Status field shows the returned status code.

Crs ID is the cursor ID, or handle, that the MicroKernel assigned to the request. This information can be helpful in debugging applications that support multiple clients or that support single clients with multiple cursors.

Db Length reflects the Data Buffer Length. Keynum reflects the Key Number. Clnt ID reflects the Client ID parameter used by the BTRVID and BTRCALLID functions. DBuf reflects the Data Buffer contents. KBuf reflects the Key Buffer contents. The trace file truncates the Data Buffer and Key Buffer contents, depending on the MicroKernel configuration.