The scenario
Model an IDEF0 A-0 context diagram for an automated car wash system, showing the top-level function with incoming dirty car and consumables (input), resulting clean car and waste (output), car wash program and manual settings (control), and supporting operators and equipment (mechanism).
What is in this drawing
Read the decisions behind it.
01
Represent IDEF0 ICOM arrows (Input, Control, Output, Mechanism) as separate signal nodes connected to a single system block.
02
Use in and out boundary ports to anchor the system's primary flow.
03
Apply generic role to the system block with no special routing to keep the layout simple.
When you need a schematex-blockdiagram equivalent of an IDEF0 A-0 context diagram for a single function system, using block diagram syntax to convey the ICOM classification.
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