Hello, I'd like to ask if anyone has done the following operations in either ENVI/IDL/NITF Module. I'm pretty new to image programming, more specifically IDL and ENVI, so I'd appreciate if anyone would shed a light on me. Thanks!!!. I'd like to be able to manipulate an NITF file with absolutely no user interaction (ENVI Batch Mode??). Given an input NITF file, can I perform these operations dynically: * Open an NITF file. * Retrieve single or all attributes of NITF file header, and of the segment (image/graphic/text) headers. * Edit/Change/Add attributes to the NITF file header (origination, security, file length, title, etc.), and to the NITF segment headers. * Re-save the NITF file with updated information, or save it to another NITF file with the updated information. Thanks a million, -Don