> For the complete documentation index, see [llms.txt](https://guide.cronuszen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.cronuszen.com/gpcscripting/gpc-script-guide/start-here/the-report-pipeline.md).
# The report pipeline
Think of each cycle as five layers:
Active combos execute after the written `main` sections and before `remap` / `unmap` finalization. The compiler makes each active combo step part of the cycle's combined `main` behavior, even though the combo is declared in a separate top-level block. This means a combo can become a later writer than ordinary `main` code for the same identifier.
***
The key consequence is **order**. If two lines write the same output during a cycle, the later write wins:
{% code title="report-pipeline.gpc" %}
```cpp
main {
set_val(PS5_RX, 25);
set_val(PS5_RX, -40); // final outgoing RX is -40
}
```
{% endcode %}
Conditionally writing an output can also leave another system as the final writer. Include active combos when reviewing output ownership instead of looking only at the visible order inside `main`.
---
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