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Edit Journal and Piece Table

Two internals matter most in editable scenarios.

Piece Table

ByteOverlay uses:

• original pieces that reference the underlying reader
• inserted pieces that reference an append-only insert buffer

That lets insert and delete operations reshape the logical document without mutating the original source immediately.

Edit Journal

EditJournal records logical operations, not UI gestures. This keeps undo and redo independent from the view.

Batch Operations

Use BeginBatch() and EndBatch() when one user command should undo as a single unit, such as replace-all or range transforms.