       enable [ -afmr ] arg ...
              Enable the hash table element named arg, 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.
