File 
ISignal interface 
ISignalLink 
ISignalManager interface 
ISignalNode 
IsImage Object Type Check 
IsJunction Object Type Check 
IsKeepOut Attribute Check 
IsLabel Object Type Check 
IsLCC Attribute Check 
IsLeaderDimension Object Type Check 
IsLine Object Type Check 
IsLinearDiameterDimension Object Type Check 
IsLinearDimension Object Type Check 
IsMechanicalComponent Attribute Check 
IsMirrored Field 
IsNet Object Type Check 
IsNetLabel Object Type Check 
IsNetSelected Attribute Check 
IsNetTieComponent Attribute Check 
IsNoERC Object Type Check 
IsOblique Attribute Check 
IsObliqueNegative Attribute Check 
IsObliquePositive Attribute Check 
IsOffSheetConnector Object Type Check 
ISoftBreakpoint interface 
Isolate Object Layer 
IsOriginalDimension Object Type Check 
IsPad Object Type Check 
IsParameter Object Type Check 
IsParameterSet Object Type Check 
IsPart Object Type Check 
IsPGA Attribute Check 
IsPie Object Type Check 
IsPin Object Type Check 
IsPoly Object Type Check 
IsPolygon Object Type Check (PCB) 
IsPolygon Object Type Check (Schematic) 
IsPolyline Object Type Check 
IsPort Object Type Check 
IsPowerObject Object Type Check 
IsRadialDiameterDimension Object Type Check 
IsRadialDimension Object Type Check 
IsRectangle Object Type Check 
IsRectangularPad Attribute Check 
IsRoom Object Type Check 
IsRoundPad Attribute Check 
IsRoundRectangle Object Type Check 
IsRule Object Type Check 
IsRule_AcuteAngle Object Type Check 
IsRule_BrokenNets Object Type Check 
IsRule_Clearance Object Type Check 
IsRule_ComponentClearance Object Type Check 
IsRule_ComponentRotations Object Type Check 
IsRule_ConfinementConstraint Object Type Check 
IsRule_DaisyChainStubLength Object Type Check 
IsRule_FanoutControl Object Type Check 
IsRule_FlightTime_FallingEdge Object Type Check 
IsRule_FlightTime_RisingEdge Object Type Check 
IsRule_LayerPair Object Type Check 
IsRule_LayerStack Object Type Check 
IsRule_MatchedLengths Object Type Check 
IsRule_MaximumViaCount Object Type Check 
IsRule_MaxMinHeightConstraint Object Type Check 
IsRule_MaxMinHoleSize Object Type Check 
IsRule_MaxMinImpedance Object Type Check 
IsRule_MaxMinLength Object Type Check 
IsRule_MaxMinWidth Object Type Check 
IsRule_MaxSlope_FallingEdge Object Type Check 
IsRule_MaxSlope_RisingEdge Object Type Check 
IsRule_MinimumAnnularRing Object Type Check 
IsRule_NetsToIgnore Object Type Check 
IsRule_Overshoot_FallingEdge Object Type Check 
IsRule_Overshoot_RisingEdge Object Type Check 
IsRule_ParallelSegment Object Type Check 
IsRule_PasteMaskExpansion Object Type Check 
IsRule_PermittedLayers Object Type Check 
IsRule_PolygonConnectStyle Object Type Check 
IsRule_PowerPlaneClearance Object Type Check 
IsRule_PowerPlaneConnectStyle Object Type Check 
IsRule_RoutingCornerStyle Object Type Check