If I want to get a brief usage message for a bash builtin, I can use help <builtin> at a command prompt, e.g.$ help exportexport: export [-fn] [name[=value] ...] or export -p    Set export attribute for shell variables.    Marks each NAME for automatic export to the environment of subsequently    executed commands.  If VALUE is supplied, assign VALUE before exporting.    Options:      -f        refer to shell functions      -n        remove the export property from each NAME      -p        display a list of all exported variables and functions    An argument of `--' disables further option processing.    Exit Status:    Returns success unless an invalid option is given or NAME is invalid.How can I do this in zsh?  I've tried% export --helpzsh: bad option: -eand % help exportzsh: command not found: helpAlso the word help isn't anywhere in man zshbuiltins.
How can I get a help message for zsh builtin's?
command line;zsh;documentation;shell builtin