In the Elektron Transport API Developer Guide, C Edition, (specifically section 10.1.1.3), it refers to an "Elektron Direct Feed User Guide". Unfortunately, the link appears to be dead (or at least I can't reach it).
I'd like to know where I can find this document as it hasn't come up in any searches I've tried. More generally, I'd be interested in any information regarding the EDF.
Thank you very much for this feedback and for helping us to improve the TR Dev Portal.
It looks you found a broken link in the ETA documentation. I just contacted our technical writers so that they fix it. In the meantime, please find attached the document you requested.
Sorry for the inconvenience,