[users] Can I use OpenOffice to create .doc, .xls or .ppt files for commercial use?

[Ma Michael]

Dear Sir,

       Can I download the openoffice for creating documents (as title) for
selling my own data to another persons or companies as Microsoft may
get the proprietary for using the .doc, .xls or .ppt files.

Yours sincerely,
MichaelMa