## Drawing reaction rules with the aocr-2.0 Utility

## Explanation of the used expressions and lines

This is not a complete list of the expressions or lines that can be used with the program.

The asterisk * matches every symbol.

**>H** matches all
symbols "greater than" **H**, in particular
**H**, **O**, **N**, **C**.

**>O** matches all
symbols "greater than" **O**, in particular
**O**, **N**, **C**.

**~X** means
"not the symbol **X**". Therefore the line between **C** and **~-**
corresponds to a regular single bond or to the assignment of a positive charge.

**X|Y** means
"**X** or **Y**". Therefore a line between **O** and **H|-**
is equivalent to a single bond between **O** and **H** or
to a negative charge on the **O**.

A dotted line with small dots matches any bond (single, double or higher).

A normal dotted line allows any bond or none.

Close