Boolean connectors representation in Diane +

Boolean Connectors | Graphical Representation | Explanation
AND, OR, XOR |  | When tasks must be synchronised or when the user must choice between different tasks, we use booelan connectors. Three connectors exist: and, or, xor. They are used in the same way as in the boolean logics (and=all the tasks must be done, or=at least one task must be done, xor=one and only one task must be done). Important: Because XOR is system-oriented and not very different from "OR" for designers, we suggest to use only AND and OR. AND keeps its meaning, and OR means only one task. Each boolean connector may have an unlimited number of arows. e.g. to request to open a file, the user must choose between File/Open…, Open button, CTRL+O shortcut. So, we use a OR (=XOR) boolean connector.