OSIS? 2.0.1 User's Manual - Web services are running on AMBIB

non-obvious interpretation, that fact must be marked, and the encoders' practices and
biases should be duly noted in the front matter.
The text must also conform to the requirements of Level 3 Quality as described below.
17.2. Quality levels
The conformance levels defined above do not specify the level of accuracy and
proofreading of the text proper. This is instead measured by the following scale of
"Quality":
17.3. Level 1: Sub-OCR Quality
The text may have many typographical errors; essentially, it is unproofread text from
automated OCR, probably of a less-than-ideal original.
17.4. Level 2: OCR Quality
The text may have up to 5 typographical errors per source page. It may be unproofread
output from ideal OCR of an ideal source, or may have been run at least through
rudimentary spell-checking or vocabulary counting and repair, or entered by a doublekeying
or similar service that maintains accuracy to the required level.
17.5. Level 3: Proof Quality
There may not be more than an average of 1 error per source page (or per 2000 characters
of content) as comp<strong>are</strong>d with the stated copy text. This requirement does not preclude
producing new editions, which for example may fix typos in the original, normalize
spelling of older texts, and so on. However, in such cases it is recommended that the best
available copy of the source text as it existed prior to such modernizations, also be made
available.
17.6. Level 4: Trusted Quality
A Trusted Quality document must fulfill all the requirements of a Proof Quality
document, and must also have been in public use for at least one year, and read by at least
5 independent proofreaders, with all noted errors fixed. The text should have available a
complete log of changes made since it reached Proof Quality. Random spot-checks of at
least 3% of the text must come up with no instances of more than 1 error per 5 pages (or
10,000 characters of content).
18. Application Requirements
Applications should avoid making any processing distinctions between elements
represented as non-crossing single elements or as milestone pairs.