{}
{   The purpose of this request is to transfer control from the}
{ file access procedure (fap) to the access method.}
{   This request is issued whenever a fap wishes to pass an operation through}
{ to the access method. It is also used whenever the fap must issue one or}
{ more access method requests to fulfill the request for which the fap was}
{ originally called.}
{}
{       AMP$ACCESS_METHOD (FILE_IDENTIFIER, CALL_BLOCK, LAYER_NUMBER, STATUS)
{
{ FILE_IDENTIFIER: (input) This parameter specifies the file access identifier}
{       which was an actual parameter passed to the fap making this request.}
{}
{ CALL_BLOCK: (input) This parameter specifies the access method operation}
{       to be performed.}
{
{ LAYER_NUMBER: (input) This parameter specifies the identity of the fap}
{       making the request; it was an actual parameter passed to the fap.}
{
{ STATUS: (output) This parameter specifies the request status.}
{       CONDITION:  ame$ring_validation_error,
{                   ame$improper_file_id,
{                   ame$improper_layer_number.
{       IDENTIFIER: amc$access_method_id.
{
