Using as: AVR-Chars

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#### 9.5.2.1 Special Characters

The presence of a ‘`;`’ anywhere on a line indicates the start of a comment that extends to the end of that line.

If a ‘`#`’ appears as the first character of a line, the whole line is treated as a comment, but in this case the line can also be a logical line number directive (see Comments) or a preprocessor control command (see Preprocessing).

The ‘`$`’ character can be used instead of a newline to separate statements.