Why the fourm is so lonely? As the only official forum for ENVI and IDL, I think there should be a idea place for beginers to study and exchange. In fact it is presented a problem, often a couple of weeks have no response. First of all, I think this fourm should be revised, make it more friendly for people. Second, it's very important to employ some responsible experts to answer general questions for beginners, so as to enhance the popularity and visibility, which will both benefit for ITT and beginers.