[GENERAL] how do I clear a page, or set an item in a page to 'free'?

[Eric Parusel]

I've got a mucked up page in my db, and I can't complete a database dump 
until a particular page is fixed/removed from the table. :(

Could someone let me know the proper way to go about making a change 
such as this?:

1) Clear the page
or
2) Set the bad items in the page to 'free'
I can see the page with pg_filedump. (I know the page number)
Either method would suffice, I just need to get the job done :/
Thanks for any help you can offer,
Eric
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