I use "Programmer's File Editor (PFE)" for editing Unix style text files on the PC. It's not too big, works well and is free It can be a bit hard to find these days as it isn't being developed anymore, but I can send you a copy if you want.
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(list 6284, Mk1 S/N 00299 4GB blue [sold]. Mk2 S/N 080000094 20GB blue)