Here is a list of all properties with links to the classes they belong to:

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• ObjectiveCanBeCompleted : Barotrauma.MessageBoxAction
• ObjectiveManager : Barotrauma.HumanAIController
• Objectives : Barotrauma.AIObjectiveLoop< T >, Barotrauma.AIObjectiveManager
• ObjectiveTag : Barotrauma.EventObjectiveAction, Barotrauma.MessageBoxAction
• ObscureOtherWearables : Barotrauma.WearableSprite
• ObstructVision : Barotrauma.Character
• ObstructVisionAmount : Barotrauma.Character
• OffensiveAgent : Barotrauma.WreckAIConfig
• Offset : Barotrauma.CharacterParams.TargetParams, Barotrauma.SpawnAction, Barotrauma.StatusEffect.CharacterSpawnInfo, Barotrauma.StatusEffect
• OffsetAmount : Barotrauma.Camera
• OffsetOnSelected : Barotrauma.ItemPrefab
• OffsetOnSelectedMultiplier : Barotrauma.Item
• OldIdentifier : Barotrauma.LevelGenerationParams
• OnDamagedThreshold : Barotrauma.ItemPrefab
• OnGround : Barotrauma.Ragdoll
• OnLinksChanged : Barotrauma.WayPoint
• OnlyBlinkInWater : Barotrauma.RagdollParams.LimbParams
• OnlyHumans : Barotrauma.Attack
• OnlyInOwnSub : Barotrauma.Items.Components.RemoteController
• OnlyJobSpecificDialog : Barotrauma.JobPrefab
• Open : Barotrauma.Gap
• OpeningSpeed : Barotrauma.Items.Components.Door
• OpenState : Barotrauma.Items.Components.Door
• Operate : Barotrauma.NPCOperateItemAction
• OperateTarget : Barotrauma.AIObjectiveOperateItem
• Operation : Barotrauma.MissionStateAction, Barotrauma.SetDataAction, Barotrauma.SetPriceMultiplierAction
• Operator : Barotrauma.CheckDataAction
• Option : Barotrauma.ShipIssueWorker
• Options : Barotrauma.ConversationAction, Barotrauma.Order
• OrderCategory : Barotrauma.UIHighlightAction
• OrderData : Barotrauma.CharacterCampaignData
• OrderedByDifficulty : Barotrauma.EventManagerSettings
• OrderedCharacter : Barotrauma.ShipIssueWorker
• OrderedToBeIgnored : Barotrauma.IIgnorable, Barotrauma.Item, Barotrauma.WallSection
• OrderIdentifier : Barotrauma.CheckOrderAction, Barotrauma.Networking.OrderChatMessage.OrderMessageInfo, Barotrauma.UIHighlightAction
• OrderOption : Barotrauma.CheckOrderAction, Barotrauma.Networking.OrderChatMessage.OrderMessageInfo, Barotrauma.Networking.OrderChatMessage, Barotrauma.NPCOperateItemAction, Barotrauma.UIHighlightAction
• OrderOptionIndex : Barotrauma.Networking.OrderChatMessage.OrderMessageInfo
• OrderPrefab : Barotrauma.Networking.OrderChatMessage.OrderMessageInfo
• OrderPriority : Barotrauma.Networking.OrderChatMessage
• OrderTargetTag : Barotrauma.CheckOrderAction, Barotrauma.UIHighlightAction
• OrganDamage : Barotrauma.AfflictionPrefab
• Origin : Barotrauma.DeformableSprite, Barotrauma.RagdollParams.LightSourceParams.LightTexture, Barotrauma.RagdollParams.SpriteParams, Barotrauma.Sprite
• OriginalElement : Barotrauma.EditableParams, Barotrauma.RagdollParams.SubParam
• OriginalLinkedToID : Barotrauma.LinkedSubmarine
• OriginalName : Barotrauma.BallastFloraPrefab, Barotrauma.CharacterInfo, Barotrauma.CoreEntityPrefab, Barotrauma.ItemAssemblyPrefab, Barotrauma.ItemPrefab, Barotrauma.LinkedSubmarinePrefab, Barotrauma.MapEntityPrefab, Barotrauma.StructurePrefab, Barotrauma.TalentPrefab
• OriginalOutpost : Barotrauma.Item
• OriginalParameters : Barotrauma.LuaCsHook.ParameterTable
• OriginalReturnValue : Barotrauma.LuaCsHook.ParameterTable
• OriginalTeamID : Barotrauma.Character
• OriginalType : Barotrauma.Location
• OtherConnectionName : Barotrauma.CheckConnectionAction
• OutdoorsOnly : Barotrauma.Items.Components.ElectricalDischarger
• OutpostFilePath : Barotrauma.OutpostGenerationParams
• OutpostGenerationParamsExist : Barotrauma.LevelData
• OutpostModuleInfo : Barotrauma.SubmarineInfo
• OutpostModuleTags : Barotrauma.Hull
• Output : Barotrauma.Items.Components.BooleanOperatorComponent, Barotrauma.Items.Components.Controller, Barotrauma.Items.Components.EqualsComponent, Barotrauma.Items.Components.MotionSensor, Barotrauma.Items.Components.RegExFindComponent, Barotrauma.Items.Components.SignalCheckComponent, Barotrauma.Items.Components.SmokeDetector, Barotrauma.Items.Components.WaterDetector
• OutputContainer : Barotrauma.Items.Components.Deconstructor, Barotrauma.Items.Components.Fabricator
• OutputDisabled : Barotrauma.Items.Components.PowerContainer
• OutputEmptyCaptureGroup : Barotrauma.Items.Components.RegExFindComponent
• OutputType : Barotrauma.Items.Components.OscillatorComponent
• Overload : Barotrauma.Items.Components.PowerTransfer
• OverloadVoltage : Barotrauma.Items.Components.PowerTransfer
• Override : Barotrauma.AIObjectiveOperateItem
• OverrideDescription : Barotrauma.FabricationRecipe.RequiredItem
• OverrideHeader : Barotrauma.FabricationRecipe.RequiredItem
• OverrideMovement : Barotrauma.Character
• OverrideProperties : Barotrauma.LevelObjectPrefab
• Owner : Barotrauma.PetBehavior
• OwnerBeardIndex : Barotrauma.Items.Components.IdCard
• OwnerConnection : Barotrauma.Networking.GameServer
• OwnerFaceAttachmentIndex : Barotrauma.Items.Components.IdCard
• OwnerFacialHairColor : Barotrauma.Items.Components.IdCard
• OwnerHairColor : Barotrauma.Items.Components.IdCard
• OwnerHairIndex : Barotrauma.Items.Components.IdCard
• OwnerJob : Barotrauma.Items.Components.IdCard
• OwnerJobId : Barotrauma.Items.Components.IdCard
• OwnerMoustacheIndex : Barotrauma.Items.Components.IdCard
• OwnerName : Barotrauma.Items.Components.IdCard
• OwnerNameLocalized : Barotrauma.Items.Components.IdCard
• OwnerSheetIndex : Barotrauma.Items.Components.IdCard
• OwnerSkinColor : Barotrauma.Items.Components.IdCard
• OwnerTags : Barotrauma.Items.Components.IdCard
• OwnerTagSet : Barotrauma.Items.Components.IdCard
• OwnInventory : Barotrauma.Item
• Oxygen : Barotrauma.Character, Barotrauma.Hull
• OxygenAmount : Barotrauma.CharacterHealth
• OxygenAvailable : Barotrauma.Character
• OxygenFlow : Barotrauma.Items.Components.Vent
• OxygenLow : Barotrauma.AfflictionPrefab
• OxygenLowResistance : Barotrauma.CharacterHealth
• OxygenPercentage : Barotrauma.Hull