enable [ -afmr ] name ...
       Enable  the  named  hash table elements, presumably
       disabled earlier with disable.  The default  is  to
       enable  builtin  commands.   The  -a  option causes
       enable to act on aliases.   The  -f  option  causes
       enable  to  act  on shell functions.  The -r option
       causes enable to act on  reserved  words.   Without
       arguments  all  enable hash table elememts from the
       corresponding hash table are printed.  With the  -m
       flag the arguments are taken as patterns (should be
       quoted) and all hash table elements from the corre-
       sponding  hash  table  matching  these patterns are
       enabled.  Enabled objects can be disabled with  the
       disable builtin command.
