Program use graphical symbols and relational operators (such as < for "less than" and = for "equal to") to portray the sequence of steps needed to fulfill the logic in that program, module, or method.

Flowcharts

Explanation:

Flowcharts  can be considered as a method of representing algorithms using pictorial shapes. In flowcharting each symbol (shape) has a pre-defined meaning, such that overall, the flowchart will represent an entire work or the all the steps required to be taken to solve a given problem.

see the attachement for a summary of the symbols used in flowcharts and their corresponding meanings and names