# Document preview

## Sidebar tabs

- Default tab: Files
- Files close buttons (alone -> with guide -> restored): 1 -> 1 -> 1
- Manual guide close buttons: 1
- Add buttons (Files -> guide -> Files): 1 -> 0 -> 1

## Markdown

- Heading: Markdown smoke
- Tail loaded by scrolling: Markdown tail
- Loaded images: relative image | absolute image | reference image
- Viewers: Markdown -> Code -> Plain text
- Same tab: true

## Basic HTML

- Developer tools: disabled for this scenario
- Sandbox: no permissions
- Inline script: pending
- Local script: pending
- Network requests: 0

## HTML

- Viewer: HTML
- Sandbox: allow-scripts
- Inline script: INLINE_OK
- Local script after save: LOCAL_JS_REFRESHED
- Outside-workspace script: OUTSIDE_JS_OK
- Local stylesheet after save: rgb(56, 34, 12)
- Parent access: parent-blocked (SecurityError)
- Parent unchanged: true

## PDF

- Viewer menu hidden: true
- Worker: dsh-pdf
- Continuous pages: 2
- Horizontal overflow: false
- Canvas fills: red -> blue -> blue
- Same tab: true
- Selected and copied text: Selectable PDF text

## PDF page units

- UserUnit 2: selected and copied text aligns with the canvas

## PDF page rotation

- 90, 180, 270 degrees: selection and copied text align with canvas ink before and after resizing

## PDF drag selection

- Table selection: forward and backward drags exclude later sections
- Line-break highlight: transparent

## Code paging

- Viewer: Code
- Initial reading indicator: true
- Lines: 64 -> 65
- Prefix retained: true
- Tail: const tail = "CODE_TAIL";

## Office unavailable

- DOC, DOCX, XLS, XLSX, PPT, PPTX viewer menus: 0 | 0 | 0 | 0 | 0 | 0
- Guidance: Read failed: Office previews are unavailable. Enable the document preview service on the computer running DeepSeek Harness.
- Binary text shown: false
- Plain-text option and viewer picker: hidden

## Unknown suffix

- Viewer menu hidden: true
- Text: UNKNOWN_SUFFIX | Plain fallback.

## Unviewable binary

- State: unsupported
- Line: Preview is not available for this file type yet.
- Header control: Open
- Empty-state control: Open in default app