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A framework for a system of charts compatible with the use of applicative programming languages is proposed and illustrated. The charts are similar in spirit to the structured flowcharts that have sometimes been used with algorithmic languages. They are based on a method of representing the structure of nested expressions of arbitrary complexity. This method is adaptable to the incorporation of graphical devices for the depiction of local identifier bindings, conditional expressions, recursive function definitions, and the various functional combining forms employed in the FP-style of applicative programming.