use @DATE@ or @TIME@ or @SIG@ to timestamp current date

[[Date(2006-03-04T15:14:25)]] [[DateTime(2006-03-04T15:14:25)]]

2006-03-04 2006-03-04 07:13:53

2002-11-12 09:44:10

2002-11-12

2003-05-26

2003-05-26 12:12:10