Search notes:

Registry: HKEY_CURRENT_USER\Software\Microsoft\Office

List of subkeys I've seen below HKEY_CURRENT_USER\Software\Microsoft\Office include

Numerical sub keys

The numerical sub keys (such as 11.0, 12.0, 13.0) correspond to Office versions.
The actual value for a currently installed Office application is returned by the version property of the corresponding application object.
See also HKEY_CURRENT_USER\Software\Microsoft\Office\X.Y

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/Windows/...', 1788401405, '216.73.217.21', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Windows/registry/tree/HKEY_CURRENT_USER/Software/Microsoft/Office/index(53): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78