
: Re: what does the v5.0 in the name of an e-book file stand for? I have seen various e-books on the Internet that have a (v5.0) in the name e.g. Charles Darwin - On the Origin of Species (v5.0).epub
This is an indication of the quality of the ebook. (v5.0) should be
close to retail quality:
v1.x: publication has been scanned and OCR-ed, but not spell checked.
v2.x: publication has been scanned, OCR-ed, and spell checked but not proofread.
v3.x: publication has been scanned, OCR-ed, spell checked, and proofread.
V4.x: publication has been proofread by multiple persons and is near retail quality.
v5.x: publication is of retail quality.
Minor version numbers are normally used for committed/uploaded changes.
I have not come across any (semi-)official website for these indications. I pulled these from my notes that I made while doing book scans myself. I think they came from some Usenet post.
Some v5 material still has a lot of errors (especially older publications where the fonts are not easily recognised by the OCR).
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