Heading settings define defaults for H1 through H6. Project settings are broad defaults. Book settings can inherit or override them for one book.
Open Project Settings > Headings & contents in the Explorer, or Publishing > Headings & contents in a book's settings dialog. Choose left, center, or right alignment for each heading level. These controls align heading text in the editor and ebook, not the entries in the table of contents.
New headings use the level default. Existing headings keep their alignment. To make one follow the default, open its block settings and select Use heading default. To update every existing heading at one level, select Reset existing beside that level's alignment. Project settings apply the reset across the project; book settings limit it to that book. Choosing an alignment in the floating toolbar overrides the default for that heading, even when you choose left. Reset a book heading row to follow the project again.
A heading preset can fill the H1-H6 names, timing defaults, horizontal-rule timing, normal prose paragraph timing, TOC settings, and audio reuse setting. New blank projects default to the Novel preset unless you choose another preset.
Pre-heading silence is the pause before a heading begins. It plays before any start audio cues. Post-heading silence plays after the heading's start cue and heading audio sequence, before that heading's section content. Post-subtree silence is the pause after that heading's full section subtree has been prepared.
Headings & contents also includes rows for horizontal rules and normal prose paragraphs. Paragraph timing applies only to ordinary prose paragraphs, not headings, rules, tables, code blocks, or other special block types.
Audio cues are shown as start-count::end-count. Start cues play after pre-heading silence and before the heading or section begins. End cues play after the heading's prepared audio sequence.
TOC means table of contents. The book icon marks heading levels included in book or ebook output. The headphones icon marks the heading level used for audiobook navigation.
Targets still matter. A heading selected for book TOC should be included in print, and a heading selected for audio TOC should be included in audio.
Administrators manage the preset catalog separately from the managed asset library. Applying a preset to an existing project stages those preset defaults into the project settings.
Open Project Settings immediately above Project library in the Explorer. It starts collapsed. Choose General, Typography, Headings & contents, or Voices to edit in the main workspace. Switching sections keeps your drafts and scroll position. Save changes saves all changed sections and keeps the page open. In nested editors, Apply changes adds edits to the project draft; save the project afterward. Leaving with unsaved edits offers keep or discard. Book and manuscript settings remain in their own dialogs; they can override inherited project defaults where supported. Provider secrets are never retained after leaving the project settings session.
Provider keys appears only for users approved to use their own provider keys (BYOK). Silence at the edges of synthesized speech is trimmed automatically; there is no toggle. Authored pauses and heading/block timing are unchanged.
General contains only the project chat toggle. Put project background and author guidance in Project library > Reference and Guidance, not a description field. Existing description metadata is preserved; saving settings neither migrates it nor overwrites the reference document.
Audio reuse is an advanced setting. Group reusable audio by shows heading levels with their configured names; a level is not necessarily a chapter. Pause narration pauses the voice while a sound cue plays. Sound effects add sounds to the story; voice effects change narration.