Two editorial aims
A diplomatic edition aims to represent one witness, often retaining its line breaks, spellings, punctuation, corrections and visible losses. It is still an edition: assigning a letter to a faint stroke and deciding how to display a deletion require judgment. A normalized or reading edition may expand abbreviations, regularize spelling, segment words, supply modern punctuation or select readings from several witnesses. “Diplomatic” and “normalized” describe aims and degrees, not a binary guarantee that one text contains no intervention.
The Institute for New Testament Textual Research lets users compare documentary transcriptions and applies declared regularization rules for collation. Such rules can make variant comparison more meaningful, but the unregularized forms must remain recoverable. Search results based on normalized spellings answer a different question from a search of what a particular scribe wrote.
A reversible reading
Keep the witness line and the editorial line aligned by stable line or passage identifiers. For each change, identify its kind: expansion, spelling, segmentation, punctuation, correction, or selection of another witness. If a school text prints only a polished reading, consult its introduction and apparatus before treating every character as visible in one source.
Practice: take one short diplomatic line from a published edition and mark every difference in its normalized display. Explain which differences change the sequence of letters and which change only presentation.
Modern-language examples on this page clarify a linguistic pattern. They do not establish unattested sounds or forms for an ancient language. Follow the cited sources below and keep editorial readings separate from the surviving trace.