Hello,
Shortcut of today is
Ctrl + G
Has multiple functions somewhat related, depending on the program. In Microsoft programs such as Office, Word it acts as a command for Go to page, section or line, which can also be achieved with F5. The most popular browsers use it in conjunction with Ctrl +F/Find to either Find Again (in Firefox) or Highlight search results (Chrome).
Drop a line to tell us what it does within other programs.