EXTEND THIS
  Compiles the TPU procedure that the cursor is on---same as using the
  EXTEND EVE command without having to type the procedure name.
  Steps:
     1.  Put the cursor anywhere in the procedure you want to compile---that
         is, anywhere between the PROCEDURE and ENDPROCEDURE statements.
     2.  Use the EXTEND THIS command.
  Usage notes:
  o  Compiler messages appear in the message window at the bottom of the EVE
     screen. To view all the messages, use the command BUFFER MESSAGES. See
     help on Message Buffer.
  o  To execute a compiled procedure, use the TPU command and specify the
     procedure name. For a sample procedure, see help on Command Files.
  o  To save save your compiled procedures for future editing sessions, use
     SAVE EXTENDED EVE to create a section file---see help on Section Files.
  Related topics:
     EXTEND ALL     EXTEND EVE     SAVE EXTENDED EVE     TPU