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
       corresponding hash table  matching  these  patterns
       are  enabled.  Enabled objects can be disabled with
       the disable builtin command.
