Click a file in the Library to open it in a window over the page. The window’s title is the file’s name, and its buttons work on that file:
ButtonWhat it does
DownloadSaves the file to your device
FullscreenFills the screen with the window. Exit fullscreen brings it back
⋯Rename, Send to Agent, Star or Unstar, and Delete. See Manage files
×Closes the window. Esc does the same
A picture of the NovaCard card open in the preview window, light themeA picture of the NovaCard card open in the preview window, dark theme
Presentations, designs and motion videos open in their own editor in the same window, where you can change them. See Slides, Design and Motion.

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What each kind of file shows

FileWhat you see
PicturesThe picture, with − and + to zoom. Drag to move around a zoomed picture
VideoYour browser’s video player
AudioThe file’s name and a player
PDFYour browser’s PDF viewer, with its pages, zoom and print
Spreadsheets (.xlsx, .xls, .csv)The sheet with its formatting, a tab for each sheet, and zoom
Word documents (.docx)The document, laid out as pages
Web pages (.html)The page as a browser shows it, or its code
Text, Markdown, code and JSONThe text; Markdown laid out, code and JSON coloured
Anything elseThe file’s name and type, with Download
A video open with the browser's player, light themeA video open with the browser's player, dark theme
An MP3 open with the audio player, light themeAn MP3 open with the audio player, dark theme
A PDF report open in the browser's PDF viewer, light themeA PDF report open in the browser's PDF viewer, dark theme
An Excel file open as a sheet with tabs at the bottom, light themeAn Excel file open as a sheet with tabs at the bottom, dark theme

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Web pages

An HTML file opens as a page. Preview and Code at the top switch between the page and its source.
An HTML email open in Preview, light themeAn HTML email open in Preview, dark theme
The HTML email open in Code with line numbers, light themeThe HTML email open in Code with line numbers, dark theme

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Earlier versions

When the agent changes a file it made and hands it over again under the same name, the new file becomes the latest version and the earlier ones are kept. A file with versions has a Version button in the window. It lists every version with its time and size, the newest marked Latest. Pick one to see it. Download saves the version you are looking at.
The Version menu with versions 3, 2 and 1, light themeThe Version menu with versions 3, 2 and 1, dark theme