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Symbology
Each symbol in the flowchart has a specific meaning. If you make a mistake when drawing the flowchart, the professionalism of the entire flowchart will be greatly reduced.
Structure specification
The flow chart has three major structures, which are sequence structure, selection structure and cycle structure.
Path specification
In addition to symbol planning and structural planning, some customary path planning should also be paid attention to in the process of drawing flowcharts, such as
1) When drawing a flowchart, in order to improve the logic of the flowchart, it should be arranged in the order from left to right and top to bottom.
2) A process starts with a start character and ends with an end character. The start symbol can only appear once, and the end symbol can appear multiple times. If the process is clear enough, the start and end symbols can be omitted.
3) In the same flow chart, the size of the symbols must be consistent, and the connecting lines must not cross or bend for no reason.
4) If the process relationship is parallel, the process needs to be placed at the same height.
5) The processing flow must be drawn with a single entrance and a single exit, and there should be only one indicating arrow for the same path.
Reference: What should a good flow chart look like? How to make?