Property Reference

A flat reference of every property the plugin exposes. The Particiliary chapters group properties by panel section and explain them in narrative form; this page is the dictionary — open it when you remember a property name but forget what it does, where to find it, or which emitter types support it.

For each property the table gives:

• Panel label — the name shown in the Properties panel (sometimes shorter than the data attribute)
• Data attribute — the stable identifier used in source-side code, attribute getters, and the PartIcleProperties Configuration child
• Type — NumberSequence (a graph), NumberRange (min/max), number, boolean, string, enum, Vector2/3, UDim2, ColorSequence
• Default — what Transform sets if the user hasn’t picked a value
• Available on — which emitter types expose this property

Many properties are polymorphic (same name, different shape on different emitter types — see the Properties chapter for a friendlier introduction). Brightness is a graph on Part / Beam / PointLight, a single number on Trail; Speed is a graph on Part / Attachment / Model, a range on Roblox’s ParticleEmitter. Always trust the panel input you see, not the property name alone.

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Spawning + emission

The properties that decide when and how often particles spawn.

Mode

Switches between Emit mode (per-emission clones, animated to the source’s graphs) and Animate mode (the source instance plays the graphs in place, no duplicates). Item-level attribute, not part of PartIcleProperties.

Field	Value
Panel label	Mode
Data attribute	EmissionMode
Type	enum ("Emit" / "Animate")
Default	Emit (Atmosphere defaults to Animate — only one renders at a time)
Available on	All except Trail (Trail uses a different storage path — Transform skips the EmissionMode stamp; emission is always a timed Enabled pulse).

Full coverage: Two Modes — Emit and Animate.

Loop

When Mode is Animate, controls whether the cycle repeats indefinitely or runs once. Item-level attribute.

Field	Value
Panel label	Loop
Data attribute	AnimateLoop
Type	boolean
Default	false
Available on	All except Trail (no Animate mode on Trail).

Enabled

Master on/off. While false, no emission occurs even if Rate / Lifetime / EmitDuration are set.

Field	Value
Panel label	Enabled
Data attribute	Enabled
Type	boolean
Default	false (true for Trail)
Available on	All 11 types

Rate

Particles per second. Continuous emission is Rate × elapsed-time particles spawned. Multiplicative with EmitDuration.

Field	Value
Panel label	Rate
Data attribute	Rate
Type	number
Default	10
Available on	All except Trail

Lifetime

How long each particle lives, in seconds. Range — each emission picks uniformly between min and max. (Trail is the exception: a single number, not a range.)

Field	Value
Panel label	Lifetime
Data attribute	Lifetime (Beam stores as BeamLifetime to avoid the native conflict)
Type	NumberRange (Trail: number)
Default	1 (Trail: 2)
Available on	All 11 types

Emit Count

Number of initial bursts fired by :EnableEmit / :AbsoluteEmit / Studio’s Emit button. :Emit(item) itself ignores this attribute — it always emits one particle. Stored as a Studio Attribute on the source instance, not a row in the property panel.

Field	Value
Panel label	(Studio Attributes only)
Data attribute	EmitCount
Type	number
Default	0 (1 for Beam)
Available on	All transformed types except Trail (Trail uses its EmitDuration string for timing instead). Native ParticleEmitters also honor it via :AbsoluteEmit.

Emit Delay

Seconds to wait after Emit() is called before the first particle spawns. Not in the panel — set as a Studio attribute on the source instance.

Field	Value
Data attribute	EmitDelay
Type	number
Default	0
Available on	All 11 types (read by the runtime on every type, including raw ParticleEmitter and Trail via Particles.EnableEmitSingle).

Emit Duration

Seconds of continuous loop after the initial bursts. 0 skips the loop. Trail’s value is a string — either a single number ("2") or a comma-separated min/max range ("5,2"); the plugin sorts the pair and picks a random duration uniformly within [min, max] per emit.

Field	Value
Panel label	(script-only on most types; “Duration” on Trail)
Data attribute	EmitDuration
Type	number (Trail: string)
Default	0 (Trail: "2")
Available on	All 11 types

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Spatial spawn

How particles are arranged at the moment they spawn — position offset, direction, spread.

Direction

Which face of the emitter particles fly out of, expressed as a NormalId (Top / Bottom / Front / Back / Left / Right).

Field	Value
Panel label	Direction
Data attribute	EmissionDirection
Type	enum (Enum.NormalId)
Default	Top
Available on	Part, Attachment, Model

Position (X / Y / Z)

Per-axis spawn offset ranges, in studs (or whatever the emitter’s coordinate frame is). Each axis is a separate NumberRange; the engine picks uniformly between min and max per particle.

Field	Value
Panel label	Position (axis-grouped)
Data attributes	PosX, PosY, PosZ
Type	three NumberRange
Default	0 per axis
Available on	Part, Attachment, Model

Pos. Mode

Coordinate space the per-particle Position offsets resolve in. Local = parent-relative; Global = world axes; RigidLocal = parent-relative but ignoring rotation.

Field	Value
Panel label	Pos. Mode
Data attribute	PosMode
Type	string (Local / Global / RigidLocal)
Default	Local
Available on	Part, Attachment, Model

Orientation

Aligns each particle’s facing relative to motion / camera / world up. Same set of values as Roblox’s ParticleEmitter.Orientation.

Field	Value
Panel label	Orientation
Data attribute	Orientation
Type	string (None / FacingCamera / FacingCameraWorldUp / VelocityParallel / VelocityPerpendicular)
Default	None
Available on	Part, Attachment, Model

Spread Angle (Part / Attachment / Model)

Cone-shaped angular spread around the central emission direction. Vector2(x, y) in degrees — first value is horizontal cone half-angle, second is vertical.

Field	Value
Panel label	SpreadAngle
Data attribute	SpreadAngle
Type	Vector2
Default	(0, 0)
Available on	Part, Attachment, Model

Spread Angle (ImageLabel)

ImageLabel uses polar motion, not cartesian. Spread is a single number in degrees giving random variation around the central EmissionAngle. See ImageLabel for the polar model.

Field	Value
Panel label	SpreadAngle
Data attribute	ImgSpreadAngle
Type	number
Default	0
Available on	ImageLabel

Z-Offset

Render-depth bias — pushes the particle’s draw order forward or back without changing its world position. Useful for layering effects above/below other transparent geometry.

Field	Value
Panel label	Z-Offset
Data attribute	ZOffset
Type	number
Default	0
Available on	Part, Beam, Attachment, Model

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Rotation

How particles rotate at spawn and during life.

Rotation (X / Y / Z)

Random initial rotation per axis at spawn, in degrees. Three independent NumberRanges — particles get a random orientation within those bounds.

Field	Value
Panel label	Rotation (axis-grouped)
Data attributes	RotX, RotY, RotZ
Type	three NumberRange
Default	0 per axis
Available on	Part, Attachment, Model

Rotation Range (ImageLabel)

ImageLabel rotates around a single 2D axis (the screen normal), so the initial rotation is one NumberRange, not three.

Field	Value
Panel label	Rotation
Data attribute	ImgRotRange
Type	NumberRange
Default	0
Available on	ImageLabel

Rotation Speed (X / Y / Z)

Rotation graph per axis. Interpreted as either absolute angle at age t (in OverLife mode) or rotation rate in degrees-per-second (in Speed mode) — see Rotation Mode for the semantics.

Field	Value
Panel label	Rot Speed (axis-grouped)
Data attributes	RotSpeedX, RotSpeedY, RotSpeedZ
Type	three NumberSequence
Default	0 per axis
Available on	Part, Attachment, Model

Rotation Speed (ImageLabel)

Single-axis 2D version. Same OverLife/Speed semantics as the workspace types but on the screen normal only.

Field	Value
Panel label	Rot Speed
Data attribute	ImgRotSpeed
Type	NumberSequence
Default	0
Available on	ImageLabel

Rotation Mode

Switches how RotSpeed values are interpreted. OverLife — graph value at age t is the absolute rotation angle (a graph ramping 0 → 360 spins the particle once across its life; a constant graph holds a fixed rotation). Speed — graph value at age t is the rotation rate in degrees-per-second; the engine accumulates value × dt each frame.

Field	Value
Panel label	Rot Mode
Data attribute	RotMode (ImageLabel: ImgRotMode)
Type	string (OverLife / Speed)
Default	OverLife
Available on	Part, Attachment, Model, ImageLabel

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Motion

How particles move once they exist.

Speed

Velocity magnitude graph, applied along the unit-vector launch direction. Pixels-per-second on ImageLabel; studs-per-second on workspace types.

Field	Value
Panel label	Speed
Data attribute	Speed (ImageLabel: ImgSpeed)
Type	NumberSequence
Default	0
Available on	Part, Attachment, Model, ImageLabel

Acceleration

Constant 3D (or 2D for ImageLabel) acceleration vector, in studs/sec² (or pixels/sec²). Applied to every particle’s velocity each frame regardless of launch direction. Common pattern: (0, -196, 0) for “Roblox gravity” on workspace types.

Field	Value
Panel label	Acceleration
Data attribute	Acceleration (ImageLabel: ImgAcceleration)
Type	Vector3 (ImageLabel: Vector2)
Default	(0, 0, 0) / (0, 0)
Available on	Part, Attachment, Model, ImageLabel

Drag

Exponential velocity decay applied each frame. A Drag of 1 cuts velocity to ~37% per second. Higher = particles settle quicker.

Field	Value
Panel label	Drag
Data attribute	Drag (ImageLabel: ImgDrag)
Type	number
Default	0
Available on	Part, Attachment, Model, ImageLabel

Dir. Mode

Coordinate space the launch direction resolves in. RigidLocal = parent-rotation-relative (most common). Local = full parent CFrame. Global = world axes (ignores parent rotation).

Field	Value
Panel label	Dir. Mode
Data attribute	DirMode
Type	string (RigidLocal / Local / Global)
Default	RigidLocal
Available on	Part, Attachment, Model

Reverse Motion

Plays the trajectory backwards — particles spawn at where they would have died and “un-fly” to their spawn point.

Field	Value
Panel label	Reverse Motion
Data attribute	InvertMotion (ImageLabel: ImgInvertMotion)
Type	boolean
Default	false
Available on	Part, Attachment, Model, ImageLabel

Velocity Vectored

Internal flag affecting how velocity composes with the parent’s CFrame motion. Most authors leave this alone.

Field	Value
Data attribute	VelocityVectored
Type	boolean
Default	false
Available on	Part, Attachment, Model

Emission Angle (ImageLabel)

ImageLabel uses polar 2D motion — a single launch angle in degrees instead of a 3D direction vector. 0° = right, 90° = up, 180° = left, 270° = down.

Field	Value
Panel label	EmissionAngle
Data attribute	EmissionAngle
Type	number
Default	90 (up)
Available on	ImageLabel

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Visual properties

Color, transparency, brightness, size — what each particle looks like at any moment of its life.

Color

Color graph over each particle’s life. Multiplies against the rendered geometry / texture.

Field	Value
Panel label	Color
Data attribute	Color (PointLight: PLColor)
Type	ColorSequence
Default	white
Available on	Part, PointLight, Trail

Transparency

Opacity graph over each particle’s life. 0 = fully visible, 1 = fully transparent.

Field	Value
Panel label	Transparency
Data attribute	Transparency
Type	NumberSequence
Default	0 (Trail: 0.5)
Available on	Part, Trail

Brightness

How much the particle self-illuminates. Polymorphic: a NumberSequence (graph) on Part / Beam / PointLight where it animates over life; a single number on Trail.

Field	Value
Panel label	Brightness
Data attribute	Brightness (Beam: BeamBrightness, PointLight: PLBrightness)
Type	NumberSequence (Trail: number)
Default	1
Available on	Part, Beam, PointLight, Trail (also a graph on ColorCorrection — see Color Correction below)

Size (Part)

Three independent graphs — one per axis — multiplying the particle’s base size each frame. The plugin’s “axis-graph-select” widget shows X/Y/Z separately.

Field	Value
Panel label	Size (axis-grouped)
Data attributes	SizeX, SizeY, SizeZ
Type	three NumberSequence
Default	1 per axis
Available on	Part

Size (ImageLabel)

UDim2 base size for each particle (0, 100, 0, 100 = 100×100 px by default), multiplied by per-axis SizeScale graphs.

Field	Value
Panel label	Size
Data attribute	ImgSize
Type	UDim2
Default	(0, 100, 0, 100)
Available on	ImageLabel

Material (Part)

Surface material applied to each emitted Part duplicate. Hardcoded panel list of 20 materials — Plastic, Neon, Glass, Metal, Wood, etc. Stored on the duplicate’s Material property.

Field	Value
Panel label	Material
Data attribute	Material
Type	enum (Enum.Material)
Default	Plastic
Available on	Part

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Beam-specific

Texture

Image painted along the beam. Roblox asset id (rbxassetid://...) or asset URL. Single value, not a graph — animate via TextureSpeed / TextureLength / Flipbook instead.

Field	Value
Panel label	Texture
Data attribute	Texture
Type	string (asset id)
Default	inherits from source Beam
Available on	Beam

Width0 / Width1

Two separate NumberSequence graphs — beam thickness at each endpoint over life. Allow tapered beams (e.g. wide at origin, thin at tip).

Field	Value
Panel label	Width0 / Width1
Data attributes	Width0, Width1
Type	two NumberSequence
Default	1 each
Available on	Beam

CurveSize0 / CurveSize1

Bezier handle lengths controlling the beam’s curve between endpoints. 0, 0 = straight line.

Field	Value
Panel label	CurveSize0 / CurveSize1
Data attributes	CurveSize0, CurveSize1
Type	two NumberSequence
Default	0 each
Available on	Beam

Segments

Tessellation count — more segments give smoother curves at higher GPU cost.

Field	Value
Panel label	Segments
Data attribute	Segments
Type	NumberSequence
Default	10
Available on	Beam

Texture Length

How far one tile of the texture covers along the beam. Lower = tile repeats more often.

Field	Value
Panel label	Tex. Length
Data attribute	TextureLength
Type	NumberSequence (Trail: number)
Default	1
Available on	Beam, Trail

Texture Speed

Scroll rate for the texture along the beam — value × seconds elapsed = scroll offset.

Field	Value
Panel label	Tex. Speed
Data attribute	TextureSpeed
Type	NumberSequence
Default	1
Available on	Beam

Texture Mode

How the texture fits between the two endpoints.

Field	Value
Panel label	Tex. Mode
Data attribute	BeamTextureMode (Trail: TextureMode)
Type	enum (Stretch / Wrap / Static)
Default	Stretch
Available on	Beam, Trail

Light Emission

Self-illumination factor for the beam’s texture — controls how much it ignores scene lighting and adds its own brightness.

Field	Value
Panel label	Light Emission
Data attribute	LightEmission
Type	NumberSequence (Trail: number)
Default	0
Available on	Beam, Trail

Light Influence

Inverse — how much scene lighting affects the beam. 1 = fully lit by scene; 0 = ignores scene light entirely.

Field	Value
Panel label	Light Influence
Data attribute	BeamLightInfluence (Trail: LightInfluence)
Type	NumberSequence (Trail: number)
Default	1
Available on	Beam, Trail

Face Camera

When on, the beam re-orients each frame to face the camera, like a billboard sprite. Useful for ribbon-style effects that should always be visible from any view angle.

Field	Value
Panel label	FaceCamera
Data attribute	FaceCamera
Type	boolean
Default	false
Available on	Beam, Trail

Blender (per-state graphs)

Beam-only multi-state graph system. Each state holds its own Color + Transparency graphs and a Time on the 0–1 axis; the engine interpolates between states as the beam ages. See GraphBlender Math for the full mechanism.

Field	Value
Panel label	Blender (panel section, not a single property)
Storage	GraphBlender Folder of Configuration children with Time/Transparency/Color attributes
Available on	Beam

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Light-specific

Range

Falloff distance graph — how far the light reaches at each moment of its life.

Field	Value
Panel label	Range
Data attribute	PLRange
Type	NumberSequence
Default	8
Available on	PointLight

Shadows

Whether the emitted light casts shadows. Costly per light at runtime; defaults off.

Field	Value
Panel label	Shadows
Data attribute	Shadows
Type	boolean
Default	false
Available on	PointLight

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Trail-specific

Width Scale

Width multiplier graph along the trail’s age. The Trail’s native WidthScale NumberSequence. Replaces the Beam-style Width0/Width1 model — Trails have a single width axis.

Field	Value
Panel label	WidthScale
Data attribute	WidthScale
Type	NumberSequence
Default	1
Available on	Trail

Min Length / Max Length

Filters: trails shorter than MinLength aren’t drawn; trails longer than MaxLength are clipped.

Field	Value
Panel label	MinLength / MaxLength
Data attributes	MinLength, MaxLength
Type	number each
Default	0.1 / 0 (no max)
Available on	Trail

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Screen-space (Blur / Bloom / ColorCorrection / Atmosphere)

These types animate post-processing effects rather than spawn discrete particles. They follow the same Mode/Lifetime/Rate machinery as the other types but their visual properties are the post-process effect’s own properties.

Blur Size

Field	Value
Panel label	Size
Data attribute	BlurSize
Type	NumberSequence
Default	10
Available on	Blur

Bloom Intensity / Size / Threshold

Field	Value
Panel labels	Intensity / Size / Threshold
Data attributes	BloomIntensity / BloomSize / BloomThreshold
Type	NumberSequence each
Defaults	0.4 / 24 / 0.95
Available on	Bloom

Color Correction graphs

Brightness / Contrast / Saturation are signed NumberSequences in the −1 to 1 range. TintColor is a ColorSequence.

Field	Value
Panel labels	Brightness / Contrast / Saturation / TintColor
Data attributes	CCBrightness / CCContrast / CCSaturation / CCTintColor
Type	three NumberSequence + one ColorSequence
Defaults	0 / 0 / 0 / white
Available on	ColorCorrection

Atmosphere graphs

Six animatable properties on the global Atmosphere. Density / Offset / Glare / Haze are NumberSequence; Color / Decay are ColorSequence. Atmosphere defaults to Animate mode at Transform (the dropdown is editable, but Animate is the only mode Roblox can render predictably) — see the Atmosphere chapter for why.

Field	Value
Panel labels	Density / Offset / Glare / Haze / Color / Decay
Data attributes	AtmDensity / AtmOffset / AtmGlare / AtmHaze / AtmColor / AtmDecay
Type	four NumberSequence + two ColorSequence
Defaults	0.3 / 0.25 / 0 / 0 / light gray / bluish-gray
Available on	Atmosphere

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ImageLabel-specific

Image

The Roblox asset id used as the visible texture. Empty string by default, so a fresh ImageLabel emitter renders nothing until you set an Image.

Field	Value
Panel label	Image
Data attribute	Image
Type	string
Default	""
Available on	ImageLabel

ImageColor3

ColorSequence graph multiplying the texture’s RGB over each particle’s life.

Field	Value
Panel label	ImageColor
Data attribute	ImageColor3
Type	ColorSequence
Default	white
Available on	ImageLabel

ImageTransparency / BackgroundTransparency

Per-particle opacity graphs for the image and the background fill respectively. Default backgrounds are fully transparent (1).

Field	Value
Panel labels	Transparency / BG Transparency
Data attributes	ImageTransparency / BackgroundTransparency
Type	two NumberSequence
Defaults	0 / 1
Available on	ImageLabel

BackgroundColor3

ColorSequence for the background fill (visible only when BackgroundTransparency < 1).

Field	Value
Panel label	BG Color
Data attribute	BackgroundColor3
Type	ColorSequence
Default	white
Available on	ImageLabel

Position

UDim2 spawn position. Default (0.5, 0, 0.5, 0) = centre of parent. Particles offset their Offset component as motion accumulates; Scale stays constant.

Field	Value
Panel label	Position
Data attribute	Position
Type	UDim2
Default	centre of parent
Available on	ImageLabel

SizeScale (X / Y)

Two independent NumberSequence graphs that multiply the base Size each frame. Per-axis squash/stretch.

Field	Value
Panel label	SizeScale (axis-grouped)
Data attributes	SizeScaleX, SizeScaleY
Type	two NumberSequence
Default	1 each
Available on	ImageLabel

Anchor Point

Where on the particle the Position anchors. (0.5, 0.5) = centre.

Field	Value
Panel label	AnchorPoint
Data attribute	AnchorPoint
Type	Vector2
Default	(0.5, 0.5)
Available on	ImageLabel

Z-Index (ImageLabel)

Draw order within the parent ScreenGui. Higher values render in front.

Field	Value
Panel label	ZIndex
Data attribute	ZIndex
Type	number
Default	1
Available on	ImageLabel

Scale Type

How the Image fits inside the particle’s Size. Stretch / Slice / Tile / Fit / Crop — same as Roblox’s Enum.ScaleType.

Field	Value
Panel label	ScaleType
Data attribute	ScaleType
Type	enum (Enum.ScaleType)
Default	Stretch
Available on	ImageLabel

Resample Mode

Texture filtering — Default smooths between pixels, Pixelated uses nearest-neighbour for crisp pixel art.

Field	Value
Panel label	ResampleMode
Data attribute	ResampleMode
Type	enum (Enum.ResamplerMode)
Default	Default
Available on	ImageLabel

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Model-specific

Scale

Uniform scale multiplier graph applied to the cloned Model and all descendants each frame.

Field	Value
Panel label	Scale
Data attribute	Scale
Type	NumberSequence
Default	1
Available on	Model

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Flipbook

Frame-by-frame animation system. Workspace types (Part / Beam) and ImageLabel both have flipbooks but with slightly different vocabularies.

Flipbook Mode

How frames advance. Workspace types (Part / Beam) expose OneShot / Loop in the dropdown, default OneShot. ImageLabel exposes Loop / OneShot / PingPong / Random with Loop as the default. Random picks a fresh random frame at each 1 / FlipbookFramerate interval, per particle — every particle’s stored frame advances independently.

Field	Value
Panel label	Mode
Data attribute	FlipbookMode (Beam: BeamFlipbookMode, ImageLabel: ImgFlipbookMode)
Type	enum (Enum.ParticleFlipbookMode)
Default	OneShot (ImageLabel: Loop)
Available on	Part, Beam, ImageLabel

Flipbook Source (ImageLabel)

ImageLabel-only enum: Decals (numbered child Decals folder) or Spritesheet (single Image divided into a grid).

Field	Value
Panel label	Source
Data attribute	ImgFlipbookSource
Type	string (Decals / Spritesheet)
Default	Decals
Available on	ImageLabel

Flipbook Framerate

Frames per second. Range on workspace types (random pick per particle); single number on ImageLabel.

Field	Value
Panel label	Framerate
Data attribute	FlipbookFramerate (Beam: BeamFlipbookFramerate, ImageLabel: ImgFlipbookFramerate)
Type	NumberRange
Default	30 (ImageLabel: 10)
Available on	Part, Beam, ImageLabel

Flipbook Start Random

When on, each particle starts at a random frame of the cycle instead of frame 0.

Field	Value
Panel label	StartRandom
Data attribute	FlipbookStartRandom (Beam / ImageLabel: prefixed)
Type	boolean
Default	false
Available on	Part, Beam, ImageLabel

Flipbook Reverse

Plays the cycle backwards. Composes with PingPong on ImageLabel.

Field	Value
Panel label	Reverse
Data attribute	FlipbookReverse (Beam / ImageLabel: prefixed)
Type	boolean
Default	false
Available on	Part, Beam, ImageLabel

Grid (ImageLabel spritesheet only)

Spritesheet column / row counts. Only meaningful when Source = Spritesheet. Total frames = GridCols × GridRows.

Field	Value
Panel label	Grid
Data attributes	GridCols, GridRows
Type	two number
Default	(8, 8) — 64-frame 8×8 sheet
Available on	ImageLabel

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Shape (Part-specific)

The Part type’s emission-volume controls. Only active when the Use shape toggle is on.

Shape

Volume primitive particles spawn inside.

Field	Value
Panel label	Shape
Data attribute	Shape
Type	enum (Enum.ParticleEmitterShape)
Default	Box
Available on	Part

Shape In/Out

Whether particles spawn moving inward (toward the volume centre) or outward.

Field	Value
Panel label	(linked into Shape settings)
Data attribute	ShapeInOut
Type	enum (Enum.ParticleEmitterShapeInOut)
Default	Outward
Available on	Part

Spawn On

Whether particles spawn from the volume’s surface or distributed through its interior.

Field	Value
Panel label	Spawn on
Data attribute	ShapeStyle
Type	enum (Enum.ParticleEmitterShapeStyle)
Default	Volume
Available on	Part

Hollow

How “hollow” the emission shell is. 0 = fully solid (volume), 1 = perfect shell (surface). Continuous between.

Field	Value
Panel label	Hollow
Data attribute	ShapePartial
Type	number
Default	0
Available on	Part

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Advanced

Properties that affect how the engine schedules and runs the emission, rather than what particles look like.

Anim. Steps

Pre-sample resolution for the graphs. Higher = smoother animation at slightly more memory cost. Most authors leave it at the default.

Field	Value
Panel label	Anim. Steps
Data attribute	TotalKeyFrames
Type	number
Default	100
Available on	All except Trail

Linger

Seconds the emitted clone lingers after its Lifetime ends, before being destroyed. Useful for “fading out” geometry that takes a moment to dissolve.

Field	Value
Panel label	Linger
Data attribute	PartLife
Type	number
Default	0
Available on	Part, Attachment, Model, PointLight, ImageLabel, Blur, Bloom, ColorCorrection, Atmosphere (not Beam or Trail)

Emit Into

Override where emitted clones parent. Default is the source’s parent (or Lighting for Atmosphere, a managed ScreenGui for ImageLabel). Pointing this at your own container lets you control z-ordering, lifetime ownership, etc.

Field	Value
Panel label	Emit Into
Data attribute	EmitParent (ObjectValue)
Type	Instance
Default	nil
Available on	All except Trail

Preload Texture

Force-loads the asset before emission begins so the first particles don’t render texture-less while the asset streams in. See Texture Pinning for the full story.

Field	Value
Panel label	Preload Texture
Data attribute	PreloadTexture
Type	boolean
Default	false
Available on	Part, Beam, Trail, ImageLabel (any type with a Texture / Image asset reference)

Link Dir.

Instance pointer — the target whose CFrame the emitter will follow.

Field	Value
Panel label	Link Dir.
Data attribute	Link (ObjectValue)
Type	Instance
Default	nil
Available on	All except Trail

Link

What kind of thing the linker tracks. None = no linking; Camera = always tracks workspace.CurrentCamera; Object = tracks whatever Link Dir. points at.

Field	Value
Panel label	Link
Data attribute	LinkSource
Type	enum (None / Camera / Object)
Default	None
Available on	All except Trail

Link Mode

How the linked transform composes into emission. Four modes: Weld (full link CFrame inherited each frame), Follow (position only — no rotation at any point), Pivot (rotation baked at spawn, then position-only thereafter), WeldWithoutRotation (position offset rotates around the link but the mesh’s own rotation stays independent).

Field	Value
Panel label	Link Mode
Data attribute	LinkMode
Type	enum (Weld / Follow / Pivot / WeldWithoutRotation)
Default	Weld
Available on	All except Trail

Full coverage: Linking.

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What’s not in this reference

Internal flags and one-off bookkeeping attributes (Transformed, Qwinkle, IsEmitter) are stamped at Transform time but aren’t user-facing. Skipping them.

The Beam GraphBlender isn’t a single property — it’s a panel section that holds an arbitrary number of state Configurations. See GraphBlender Math for how it works internally.

For each property’s full prose treatment, follow the cross-links into the Particiliary chapters — those go deeper on edge cases, common patterns, and gotchas.