Anyone who have used Flex for just few minutes will not feel strange for Flex 3 Style Explorer and Flex 3 Component Explorer. It could help us to know ” What we could do ” and ” How to do ” in Flex. Not long before, Ryan Swanson an expert in Flex has publiced an explorer named Flex 3 Regular Expression Explorer. The whole system feel so good, although there is still some details unsatisfied ( for example: can’t resize and etc. ). Let’s have a try now.