Information about PARSE and TRY_PARSE function in Denali CTP 3

I know that among the various functions int开发者_JAVA百科roduced in Denali CTP 3, there are two

as PARSE and TRY_PARSE. But I have not seen any information about those...

Could anyone please let me know about the same?

There is some information here http://msdn.microsoft.com/en-us/library/hh213126(SQL.110).aspx