If the <option>-key is pressed simultanously with arrow right/left then the cursor moves wordwise. Arrow up/down with <option> pressed moves the cursor to the first/last line of the text.
Word deletion
If the <option>-key is kept down when the backspace or delete key is pressed, then a whole word is deleted.
Word selection with the mouse
A word is selected if it's dubbel-clicked upon. If the button is kept down after the last click, then the text is selected wordwise.
Text-searching
It's possible to search for a word in the current note, subject or database by selecting "Find..." and "Find next" in the Edit-menu. The headings will be searched only if the search area is "headings".
If the box "Match lower/upper case" is cheked, then the text must match the search-string exactly.