Hello, Hsin:<br /><br />Please congratulate your sister's daughter (I think that's right) on an interesting and certainly worthwhile paper.&nbsp;<br /><br />I changed the font to black (it's easy to change&nbsp;back) because publishers often print out documents for proofreading and many non-color printers default to grayscale.<br /><br />Although I was careful not to change the content, please proofread the edited document carefully. There are quite a few editing suggestions, but in most cases are there simply for flow.<br /><br />If you have any questions, please send a message to me via Editor World and I'll get back to you as soon as possible.<br /><br />Best wishes - George<br />I am usually available for editing between 6:00 am and 10:30 pm (EST). If my status is set to 'unavailable', you can still reach me via Editor World.<br /><br /><br />