| Examples: |
| picturesque | Search keywords (letter text and annotations) for 'picturesque' |
| picturesque scenes | - for 'picturesque' AND 'scenes' |
| "picturesque scenes" | - for the phrase 'picturesque scenes' |
| picture* | - for the string 'picture' followed by 0 or more characters |
| picture? | - for the string 'picture' followed by a single character |
