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Pure Signals: signals are absent or present

• input signals must be set
• output signals are computed

Valued Signals:

are pure signals and are able to store a value

Events:

• interface scope: events can either be ingoing (in event event) or outgoing (out event event).
• local scope: events are able to store a value.

  internal: event localEvent : bool

Variables:

• variable:

  var variable: string

   
• readonly variable:

  var readonly size: int = 10

• external variable: can be referenced by the environment

  var external variable: int = 44

• pure: only makes sense for Signals. Signals are absent or present.
• host: no actual type is given. The given type in the hostType attribute is used.
• bool
• unsigned
• int
• float
• double
• string

• integer
• real
• boolean 
• string
• void

• Logical AND (: var1 && var2)
• Logical OR (: var1 || var2)
• Logical NOT (: !var1)
• Conditional Expression (var1 Expression: var1 ? var2 : var3)

• none
• add
• mult
• max
• min
• or
• and
• host