Return an HDS locator to a MORE structure AGI_MORE
’
WRITE’
then an empty MORE
structure is created if none existed. If there is an existing structure then ’
WRITE’
mode will erase the
existing contents and return a locator to an empty structure. If the access mode is ’
READ’
or
’
UPDATE’
then a locator to an existing structure is returned. In this case an error is returned if there
is not a MORE structure for the given picture. The database is not responsible for what goes in the
MORE structure or how the information is used. The application is also responsible for annulling the
returned locator. ’
READ’
, ’
WRITE’
or ’
UPDATE’
.