F6

F6, or f6, can refer to several distinct concepts across technology, biology, and aviation. In computing, F6 is the sixth function key on most keyboards. The exact action of F6 depends on the software in use; it commonly serves as a shortcut to trigger a command, move the keyboard focus between UI elements, or cycle through parts of a user interface. In web browsers, for example, pressing F6 often shifts focus to the address or location bar, while in office suites it may move focus between panes, ribbons, and the document area.

In genetics and biology, F6 denotes the sixth filial generation in breeding experiments. Generations are labeled sequentially (F1, F2, F3, etc.) to track inheritance patterns across generations and assess trait stability or changes after selective breeding or genetic modification.

In military aviation, F-6 is a designation used for Chinese-built variants of the Soviet MiG-19 fighter aircraft. Based on the J-6 design, these aircraft were produced for domestic use and sold to other countries as export variants under the F-6 designation. The lineage includes several subtypes and upgrades over time.

Other uses of the term may appear in product names, model numbers, or catalog codes, but the above contexts represent the most common meanings of f6 in technology, biology, and aviation.