Automata Eva Technical Reference User Manual page 16

Conditional Branches
Dragging the conditional branch icon onto the timeline creates a new branch,
starting with a conditional waypoint.
If the condition is true, any waypoints along this branch will be executed. If the
condition is false, the branch will be skipped (ie: the central, empty branch will
be chosen).
It's also possible to add or remove additional branches to the same tree, using
the plus and delete icons respectively. If several conditions are true, the branch
that was created first will be executed, and the other branches will be skipped.
Eg: If there are four branches, they will be evaluated in the order shown to the
right, and only the first branch to return 'yes' to the condition will be executed.
Restart waypoints can also be added to conditional branches, instructing the
robot to execute the toolpath again from the beginning.
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