Ask answers about the book or the selected passage; Ask the book, the first row as you type in the search field, starts from there. Reread looks for repetition, pace, clarity, continuity and Typos: Propose in Text writes the corrections as suggestions, to decide in Review. With a passage selected, Propose a variant, in the selection’s menu, has it rewritten.
Before the first request to each service, Finis asks for your consent to share the texts; you revoke it in Settings › Virgil. Nothing leaves without Send, and the line above it says which texts, how many words and to whom. Privacy and Data, in About Finis, explains what is sent.