MultiLine UPROPERTY(meta=(MultiLine=true)) "Shows a text box that will grow as the user adds multiple lines. Use `Shift+Enter` to enter a newline character. Note that this is *not* a flag property but a *bool* property. `meta=(MultiLine)` won't do anything. It has to be

GetValueOptions UPROPERTY(meta=(GetValueOptions="abc")) "Use to limit what are acceptable string values for the value values of a `TMap<..., FText>`, `TMap<..., FString>` or `TMap<..., FName>`. See the `GetOptions` documentation for

GetKeyOptions UPROPERTY(meta=(GetKeyOptions="abc")) "Use to limit what are acceptable string values for the key values of a `TMap<FText, ...>`, `TMap<FString, ...>` or `TMap<FName, ...>`. See the `GetOptions` documentation for

GetOptions UPROPERTY(meta=(GetOptions="abc")) "Generates a dropdown instead of a text box for the `FName`/`FString`/`TArray<FString>`/`TArray<FString>`/`TMap` with an `FName` or `FString` property. The contents of the dropdown are populated by the results of the function. For specifying options

GetRestrictedEnumValues UPROPERTY(meta=(GetRestrictedEnumValues="abc")) "Specifies which enums in a dropdown should be disabled / grayed out." https://unreal-garden.com/docs/uproperty/#getrestrictedenumvalues #UnrealEngine

InvalidEnumValues UPROPERTY(meta=(InvalidEnumValues="abc")) "Disallows listed enum values from being chosen." https://unreal-garden.com/docs/uproperty/#invalidenumvalues #UnrealEngine

ValidEnumValues UPROPERTY(meta=(ValidEnumValues="abc")) "Restricts the allowed enum values to those listed in the string." https://unreal-garden.com/docs/uproperty/#validenumvalues #UnrealEngine

ArrayClamp UPROPERTY(meta=(ArrayClamp="abc")) "Clamps an integer to be within the range of the specified `TArray`." https://unreal-garden.com/docs/uproperty/#arrayclamp #UnrealEngine

ForceUnits UPROPERTY(meta=(ForceUnits="abc")) "`Units` seems to allow property editors to override the units used to display values. In comparison `ForceUnits` does not allow any kind of overriding. I would stick to `Units` to be

Units UPROPERTY(meta=(Units="abc")) "Sets a unit to be shown after the number. For all possible values see the `TEXT` entries in `FParseCandidates` inside (https://github.com/EpicGames/UnrealEngine/blob/release/Engine/Source/Runtime/Core/Private/Math/UnitConversion.cppL20). Using an unknown value

Multiple UPROPERTY(meta=(Multiple=123)) Docs: Used for numeric properties. Stipulates that the value must be a multiple of the metadata value. https://unreal-garden.com/docs/uproperty/#multiple #UnrealEngine

Delta UPROPERTY(meta=(Delta=123)) "Changes the amount that the number changes when dragging. This does not perform any validation, the user is still free to manually enter a number that is not a multiple of the value. To perform validation, use the `Multiple`

SliderExponent UPROPERTY(meta=(SliderExponent=123)) Docs: Used by numeric properties. Indicates how rapidly the value will grow when moving an unbounded slider. https://unreal-garden.com/docs/uproperty/#sliderexponent #UnrealEngine

NoSpinbox UPROPERTY(meta=(NoSpinbox=true)) "Without this flag, when mousing over a property input box the cursor will change to show arrows, allowing the user to click and drag to change the value in the input box. This flag stops that happening. Note that this is a bool not a

UIMax UPROPERTY(meta=(UIMax=123)) Docs: Used for float and integer properties. Specifies the highest that the value slider should represent. https://unreal-garden.com/docs/uproperty/#uimax #UnrealEngine

UIMin UPROPERTY(meta=(UIMin=123)) "Setting `UIMin` stops the user being able to drag the property lower than the specified number. The user *can* however set the number lower than this value by typing it in. Most of the time it makes sense to use both `UIMin` and

ClampMax UPROPERTY(meta=(ClampMax=123)) "`ClampMax` and `ClampMin` force numbers entered into the property to be clamped within the specified range. In comparison, `UIMax` and `UIMin` stop the number from going outside the bounds when the user drags their mouse, but still allows them to type in a

ClampMin UPROPERTY(meta=(ClampMin=123)) "`ClampMax` and `ClampMin` force numbers entered into the property to be clamped within the specified range. In comparison, `UIMax` and `UIMin` stop the number from going outside the bounds when the user drags their mouse, but still allows them to type in a

NoResetToDefault UPROPERTY(meta=(NoResetToDefault)) "This hides the little return arrow that is shown to reset a value back to the value defined in the parent Blueprint or C++ class. This can be especially useful for large structs or arrays, where you would want to avoid people being able to

Instanced UPROPERTY(Instanced) Docs: Object (`UCLASS`) properties only. When an instance of this class is created, it will be given a unique copy of the Object assigned to this property in defaults. Used for instancing subobjects defined in class default properties. Implies `EditInline` and

ForceRebuildProperty UPROPERTY(meta=(ForceRebuildProperty="abc")) "Seems to find a child property node with the specified string, and if found, force them to be rebuilt" https://unreal-garden.com/docs/uproperty/#forcerebuildproperty #UnrealEngine

MaxPropertyDepth UPROPERTY(meta=(MaxPropertyDepth=123)) "You can use this to limit the depth to which nested properties are shown. It might be useful if you have structs within structs within structs to an extreme degree. No examples of this in the source code as far as I can

DisplayThumbnail UPROPERTY(meta=(DisplayThumbnail=true)) "Can also be used as metadata on `UCLASS()`." https://unreal-garden.com/docs/uproperty/#displaythumbnail #UnrealEngine

DisplayPriority UPROPERTY(meta=(DisplayPriority=123)) "Changes the order in which properties are shown within a category. Properties with lower numbers are shown before those with higher numbers. Properties without a `DisplayPriority` tag are given a default value of `MAX_int32` and displayed

DisplayAfter UPROPERTY(meta=(DisplayAfter="abc")) "Multiple properties with DisplayAfter that refer to the same property will be displayed in the order they are defined." https://unreal-garden.com/docs/uproperty/#displayafter #UnrealEngine

NonTransactional UPROPERTY(NonTransactional) Docs: Indicates that changes to this property's value will not be included in the editor's undo/redo history. https://unreal-garden.com/docs/uproperty/#nontransactional #UnrealEngine

InlineEditConditionToggle UPROPERTY(meta=(InlineEditConditionToggle)) "Instead of showing the `bool` property separately, it is instead displayed inline, to the left of the property that it is controlling. Note that this meta flag should be put on the `bool` property, not the property with the

EditConditionHides UPROPERTY(meta=(EditConditionHides)) "By default, `EditCondition` changes properties to be read-only when the condition evaluates to false. With `EditConditionHides`, the property is hidden. I find this useful for hiding larger groups of

HideEditConditionToggle UPROPERTY(meta=(HideEditConditionToggle)) (No comment or documentation yet...) https://unreal-garden.com/docs/uproperty/#hideeditconditiontoggle #UnrealEngine

EditCondition UPROPERTY(meta=(EditCondition="abc")) "`EditCondition` can be used to change a property from read-only to writeable depending on another property. The simplest way is simply using another `bool` property, but as of 4.23 more complex statements are supported. It is worth noting that

FullyExpand UPROPERTY(meta=(FullyExpand=true)) (No comment or documentation yet...) https://unreal-garden.com/docs/uproperty/#fullyexpand #UnrealEngine

ShowInnerProperties UPROPERTY(meta=(ShowInnerProperties)) "Seems to be used for object references, whereas `ShowOnlyInnerProperties` is used for Structs? `EditInline` or `Instanced` seems to be co-occurrent." https://unreal-garden.com/docs/uproperty/#showinnerproperties #UnrealEngine

EditInline UPROPERTY(meta=(EditInline)) "Using this shows the error "`EditInline` is deprecated. Remove it, or use `Instanced` instead."" https://unreal-garden.com/docs/uproperty/#editinline #UnrealEngine

SimpleDisplay UPROPERTY(SimpleDisplay) Docs: Visible or editable properties appear in the Details panel and are visible without opening the "Advanced" section. https://unreal-garden.com/docs/uproperty/#simpledisplay #UnrealEngine

AdvancedDisplay UPROPERTY(AdvancedDisplay) "Any properties with `AdvancedDisplay` are hidden under a section that is opened with a dropdown arrow. Useful for separating properties that are rarely used or only useful to advanced

ToolTip UPROPERTY(meta=(ToolTip="abc")) "Show a tooltip with this text when mousing over the property." https://unreal-garden.com/docs/uproperty/#tooltip #UnrealEngine

DisplayName UPROPERTY(meta=(DisplayName="abc")) "Changes the text label used with the property. This is used both in the Details panel and for Useful when there are internal programmer-only technical terms that do not need to be shown to the

Category UPROPERTY(Category="abc") "Using `Category`, it's possible to group properties together into expandable folders. The pipe character `|` can be used to create sub-folders. For example `Category="Character Info|Health"` would create two folders: `Character Info`, and within that,

StructTypeConst UPROPERTY(meta=(StructTypeConst)) "Does not allow the user to change the instanced struct in the drop-down menu." https://unreal-garden.com/docs/uproperty/#structtypeconst #UnrealEngine

ExcludeBaseStruct UPROPERTY(meta=(ExcludeBaseStruct)) "Used in combination with `BaseStruct`, but with this flag the base struct cannot be chosen." https://unreal-garden.com/docs/uproperty/#excludebasestruct #UnrealEngine

BaseStruct UPROPERTY(meta=(BaseStruct="abc")) "There are two different ways of limiting which instanced structs can be chosen in the editor: a) Use FInstancedStruct and set the BaseStruct meta property to point to structure. b) Use `TInstancedStruct<T>` templated property and point it to the

ShowOnlyInnerProperties UPROPERTY(meta=(ShowOnlyInnerProperties)) "Useful when you want to avoid making users click to expand an struct, for example when it is the only thing inside an outer class. Does not work for

HideInDetailPanel UPROPERTY(meta=(HideInDetailPanel)) "Not sure this is very useful for anything. Events are not really shown in a useful way in the details panel. The green + shape button that is shown on `UButton` is a UMG-specific editor customization so this does not relate to showing events in

EditDefaultsOnly UPROPERTY(EditDefaultsOnly) Docs: Indicates that this property can be edited by property windows, but only on archetypes. This Specifier is incompatible with any of the "Visible" Specifiers. https://unreal-garden.com/docs/uproperty/#editdefaultsonly #UnrealEngine

EditInstanceOnly UPROPERTY(EditInstanceOnly) "You might want to make a property `EditInstanceOnly` if it does not make sense to have a default value in the Blueprint asset. For example a `ATrigger` actor could point to `ADoor` instances within a map and tell them to open when the trigger is

EditAnywhere UPROPERTY(EditAnywhere) "The value of `EditAnywhere` properties can be changed in both the Details Panel of Blueprint assets and the Details Panel of Blueprint instances. Note that this refers to being editable in the __Details__ panel, not visible through the Blueprint Graph. For

VisibleInstanceOnly UPROPERTY(VisibleInstanceOnly) "This property will only be visible in Blueprint instances, like those that exist in the map. This is a more rarely-used visibility specifier, but you could maybe use it for showing Blueprint users the values of properties that are defined in C++

VisibleDefaultsOnly UPROPERTY(VisibleDefaultsOnly) ""Defaults" in this context means that this property will be visible in Blueprint classes (e.g. the `BP_Cat` asset in your content browser), but not instances (e.g. `Cat` in your map). You might want to make a property VisibleDefaultsOnly if it is

VisibleAnywhere UPROPERTY(VisibleAnywhere) "Properties marked with `VisibleAnywhere` are visible in the both Details Panel of Blueprint assets and the Details Panel of Blueprint instances within maps. Note that this refers to being visible in the *Details Panel*, not visible in the *Blueprint

Async Timing https://voithos.io/articles/asynctask-timing/ #UnrealEngine