diff --git a/paper/__drawio/layer-stack.drawio b/paper/__drawio/layer-stack.drawio
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diff --git a/paper/fig_layer-stack.svg b/paper/fig_layer-stack.svg
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+++ b/paper/fig_layer-stack.svg
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\ No newline at end of file
diff --git a/paper/paper.md b/paper/paper.md
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@@ -47,7 +47,6 @@ bibliography: paper.bib
# Summary
-test 52
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-b) a description (MAX 150 words)
-->
-The layer stack is primarily responsible for managing the flow control of the AR engine. Designed as a modular system, each layer encapsulates the logic for a specific domain of the AR application, such as camera processing, object tracking, UI, and rendering. The general order and expansion of these layers can be configured in the top-level main file `ACApp.cpp`.
+The layer stack is primarily responsible for managing the flow control of the AR engine. Designed as a modular system, each layer encapsulates the code for a specific domain of the AR application, such as camera processing, object tracking, UI, and rendering. The general order and expansion of these layers can be configured in the top-level main file `ACApp.cpp`.
Each layer in the stack inherits from a superclass interface defined in `Layer.h`, which includes event-like methods triggered at various points during frame processing (e.g., `OnFrameAwake()`, `OnFrameStart()`, ). These methods are invoked by the main `Run()` function in the singleton application loop from `Application.h`. This design allows application tasks to be containerized and executed sequentially while facilitating data exchange between specific layers through the `AIAC_APP` macro, enabling the retrieval of any particular layer data. Exchange between layers can also take place in a more structured way with the integrated event system (ApplicationEvent.h), which is capable of queuing events from layers and trigger in the next main loop.
-
-
+
## Geometry framework