Thanks for pointing that out. In fact, there are some other grammatical errors more noticeable than the use of comma. I do make a lot of grammatical errors in casual writing, like when discussing in forums. Regarding the rule that a comma is

http://www.sunherald.com/mld/thesunherald/living/9347623.htm Using the comma correctly is often a matter of tempo Not long ago I ended one of my scholarly dissertations with an admonitory word: "Let us think upon these things, and go in

Hi. I would like to refer to a solution that ... the hyphen, as in "PC-based solution" or "PC based ..". Yes, but you should also understand *why* the hyphen is appropriate there. Hint: "When two or more words are combined