Victor, or Keith: Could one of you please briefly describe, in black-box user's terms, what this enhancement to the vsv extension does? I get from the posted patch that the input stream can be compressed. What I do not see without digging a lot further is whether ordinary uncompressed delimited files can still be used. (Does this depend on a magic header?) It is also unclear what compression utility produces the now-usable compressed input streams. Given the ubiquity of delimited text data representation, this looks likely to be useful to others here if only they can see what it does. Thanks.