A block is an Ecolego name for the components used in the construction of the mathematical model. Blocks can be visualized using the interaction matrix or box diagrams.

• Expression
• Lookup table
• Parameter
• Compartment

• Aggregate
• Delay
• Discrete event
• General variable
• Index operation
• Running mean
• Mass balance
• Min Max
• Source Sink
• Snapshot
• Transport
  • Transport begin
  • Transport end
  • Transport N
  • Transport operation
• Sub-system
  • Model input
  • Model output

• Connector
• Influence
• Transfer

• Blocks window
• Matrix window
• Graph window