ALTER -+-> PROFILE --> <profilename> --------------+--+-> profile-options -+->
         +-> DEFAULT PROFILE -+---------------------++  +--------<-----------+
                              +-> ALIAS aliasname --+

  profile-options =

  --+-> COMMENT IS -+-> char-literal --+--------------------+>
    |               +------- / <-------+                    |
    +-> RENAME TO <new-profile-name> -----------------------+
    +-> DEFAULT TRANSACTION --> txn-options ----------------+
    +-> TRANSACTION MODES --> (txn-modes) ------------------+
    +-> LIMIT -+-+-> ROWS limit-value --------------------+++
    |          | +-> TIME limit-value -----+-+-----------++||
    |          | +-> CPU TIME limit-value -+ +-> SECONDS + ||
    |          |                             +-> MINUTES + ||
    |          +-------------------- <---------------------+|
    +-> NO -+> DEFAULT TRANSACTION --+----------------------+
            +> TRANSACTION MODES  -+-+
            +> LIMIT-+-> CPU TIME -+
                     +-> ROWS   ---+
                     +-> TIME  ----+