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 enabled hash table elements 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.
