Alt-letter

Locate and tap the Alt key, then tap the letter "F".

A pull-down menu appears under the word "File". Note that in the menu word "File", the letter "F" is underlined.

Tap the Escape key once, to remove the menu.

Tap the Escape key a second time to remove the highlighting from the word "File".

Locate and hold down the Alt key. While holding down the Alt-key, tap the letter "F".

The pull-down menu appears.

Tap the Escape key twice to remove the menu and the highlighting.