DFE Developer Guide
HP Data Format Extensions (DFE) Developer Guide assists developers in creating DFE DLLs that enable raw HTTP traffic to be converted into a maintainable, structured format that can then be maintained like a script based on a textual webpage.
You can only view this help from a machine with LoadRunner. Go to Start > All Programs > HP Software > HP LoadRunner > Documentation > Data Format Extensions Developer Guide
Tip: Use the DFE Reference Guide in conjunction with the DFE Developer guide. Make sure to download the developer and reference guides to the same folder, since they link to each other.