caption: A table with three columns: flow chart symbol, meaning and explanation. The first symbol is an oval and means ``start and end,'' which denotes the beginning and end of the flow chart. The second symbol is a rectangle and means ``step.'' This symbol shows that the user performs a task. The third symbol is a diamond and means ``decision.'' This symbol represents a point at which a decision is made. The fourth symbol is a rhombus and means ``action.'' This symbol means that the user performs an action. The fifth and final symbol is a line with an arrow pointing to the right and means ``flow line.'' It is a line that connects the various symbols in an ordered way. A note under the explanation for the ``step'' and the ``action'' symbols says that in many flow charts, steps and actions are interchangeable.
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