01//DefinitionTerm

// ##it-def =Interaction Trace — a visual or structural remainder left by a user action .Transforms invisible process (reading) into visible history .The "sand in the room" — marks where you have been

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02//Visual PropertiesUI

// ##it-visual .Traces must be visible but not distracting .Uses Pre-Attentive processing: color, glow, opacity . Examples: Background color shift, border glow, badge overlay

◌Default text (invisible)

↓user action

◉Trace: Highlighted block

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03//Types of TracesStructure

// ##it-types +Spatial Trace (Anchor): Marks location. "I was here" +Semantic Trace (Tag): Marks meaning. "This is #important" +Episodic Trace (Decision): Marks event. "I decided X here"

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04//PersistenceTech

// ##it-storage → Session traces: Disappear on close (short-term memory) → Stored traces: Persist in Episodic Overlay (localStorage) → Does not modify original CLN document

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05//Cognitive RoleMemory

// ##it-psy . Traces externalize memory: you don't need to remember where you clicked . Reduces cognitive load: visual cues replace mental notes + Supports Triple Encoding: Visual trace + Spatial location + Action memory // ##it-open ? Should traces have a "decay" timer like natural memory? ? How to differentiate "my trace" vs "collaborator trace"?