These characters are hard to classify:
# | number sign |
& | ampersand |
* | asterisk |
/ | solidus (slash) |
\ | reverse solidus (backslash) |
@ | commercial at |
_ | low line (underscore) |
| | vertical line |
¦ | broken bar |
§ | section |
© | copyright sign |
® | registered sign |
¯ | macron |