Vowels, umlauts, sPoecial characters, greek, french, ...Keys in the listTools

F2	Edit the List
F4	Show further characters/symbols  (only when arrow down button is shown)
Ctrl + Cursor key	Move selected character/symbol
Alt ↓  ↑	Show numbers and letters fpr rows and columns, so you can select a symbol with 1-9 and A-Z directly.
Shift	The will not be hidden when releasing the character key