There is no single universal shortcut key for accessing the Page Setup dialog box across all applications. The specific shortcut may vary depending on the program you are using.
Here are some common shortcut keys for Page Setup in popular software:
- Microsoft Word: Alt + P, S, P
- Microsoft Excel: Ctrl + P (twice)
- Google Docs: Ctrl + P, then click the "Page Setup" link.
Note: These shortcuts may differ slightly depending on the version of the software you are using.