I presume you're talking about a PIC programmer?, the file concerned isn't of English origin - presumably the suffix E is the one for ohm in the language concerned?, whereas English would use R. The Dutch magazine Elektor commonly uses E as the suffix for ohm.
Yup, I am talking bout the PIC programmer from your website.
I just use English-Dutch online dictionary to find the word for "Resistance" or "ohm", but none of the result is start with an "E" . Anyway, I presume "E" as ohm.