# Previewing Documents

Reading Markdown on the web should feel as deliberate and polished as reading a well-typeset book. Marked Share brings the previewing sensibilities of Marked right into the browser.

## Guided Reading and Block Navigation

When viewing a document, Marked Share includes keyboard navigation and reading position tracking:

- **Block Cursor:** A subtle indicator tracks your active block as you read.
- **Reading Band:** Navigation automatically keeps your current reading position roughly one-third of the way down the screen, preventing fatigue from awkward scrolling.
- **Persistent Location:** Your exact reading place is saved locally in your browser. Reopening the document restores your place immediately.

Press `?` on any document page to view the navigation shortcuts:

- `j` / `k` or `↓` / `↑`: Move to the next or previous block.
- `gg` / `t`: Jump to the top of the document.
- `G` / `b`: Jump to the bottom of the document.
- `Page Down` / `Page Up` (or `Ctrl-d` / `Ctrl-u`): Page down or up while maintaining reading focus.
- `e`: Instantly jump into the editor (if you have permission).

## Five Reading Styles

Typography can make or break long-form prose. Marked Share includes five distinct reading styles, each available in independent **Light** and **Dark** modes:

1. **Editorial:** Classic serif typography designed for long essays, articles, and documentation.
2. **Manuscript:** Traditional book-style formatting with generous margins and classic serif type.
3. **Swiss:** Clean, crisp grotesque sans-serif inspired by mid-century modern graphic design.
4. **Contrast:** High-contrast, sharp geometric type for maximum clarity and focus.
5. **Typewriter:** Monospaced aesthetic crafted for technical drafts, logs, and code-heavy notes.

## The Typography Hierarchy

As an author, you can set a **Published Style** in the Share dialog to give your document an intended aesthetic.

However, readers always remain in control:

1. **Reader's per-document choice** (selected in the `Aa` menu).
2. **Reader's global default** (saved in settings or browser preference).
3. **Author's published style**.
4. **Default fallback (Editorial)**.

This balance ensures authors can suggest a tone while readers can always choose the typography that works best for their eyes.