How to make "man" pages

[Fbsd1]

>> On 31/03/2010 04:00:15, Fbsd1 wrote:
>> Where can I find documentation on the procedure to create "man" pages
>> for a port?
> 
> If you want to write a man page from scratch, probably the best way to
> get started is to just copy a man page from the base system and edit it
> to taste.  See groff(1) for documentation on the command used to format
> man pages from source, and groff_mdoc(7) for details on the groff macro
> syntax.  groff+mdoc might be a markup language, but it's nothing at all
> like HTML.
> 
> If you're after how to install man pages for a port, then look at:
> 
> http://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/makefile-manpages.html
> 
> Note that the MANX and other ports Macros only affect the pkg-list and
> compressing the man pages /after/ installation. You'll still have to put
> in some code to copy your self-written man page into place.
> 
> 	Cheers,
> 
> 	Matthew
> 
OK i want to write a man page from scratch. So lets say i want to use
/usr/share/man/man2/jail.2.gz as my starting sample. How do I convert 
this .gz file to a plain text file so I can edit it with ee? And how do 
I turn the edited text file back in to a man page .gz file?