(This is part of the Q&A Series ) This question comes from Cameron Peters, from the previous Q&A on read-only regions : How expensive, relatively is it to call Snapshot.GetText? I have a classifier/tagger that works well with small files (under 100K), but which bogs down as the file...

This question was asked recently on the (internal) editor discussion alias: Is it at all possible to make parts of the text buffer read-only? Could I, for example, mark certain spans as not modifiable, so that the user wouldn't be able to change their contents? The short answer is yes...