Operators

A Doodle instruction is an instantiation of an operator. Each operator begins with the backslash character ($\backslash$). Operators are distributed in two exclusive types :

1. block operators,
2. basic operators.

Operators of the first type define contexts within basic ones can be found. There are only two defined block operators in the language:

• \diagram_header cf. §,
• \step cf. §.

All other operators are basic operators. Each basic operator source line ends with a semi-colon (;).