TclProp - a constraint manager for FATCAT

• easy to integrate with new traceable types

  set TP_traceableType(widget,traceCreate)\ "trace widget"
  
  set TP_traceableType(widget,read) \ "widgReadFunc"
  proc widgReadFunc {widgName attrName} {
  return “$widgName cget $attrName” }

• good for experimenting with alternative constraint models:

  • lazy or deferred change propagation
  • constraint priorities; - temporal constraints

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