Use UPDATE to apply a patch to the image file.

 The UPDATE command is a patch terminator.  This  command  applies
 the  previous patch to the image file and creates an output image
 file.  If you fail to issue the UPDATE command, no  output  image
 file is created.

 During a single execution of PATCH, you can  specify  the  UPDATE
 command  more  than  once.   The  first  UPDATE command specified
 creates a new output  image  file.   Subsequent  UPDATE  commands
 (specified  during that PATCH session) overwrite the output image
 file.  That is, a new version of the output  image  file  is  not
 created.

 If a SET ECO command  is  issued,  a  subsequent  UPDATE  command
 automatically sets the ECO level specified.

 Format:

      UPDATE