First type of scripts is used to define render passes, camera, scene, render targets, etc.
The scripts folder contains this type of scripts.
The script is executed once when loaded, then a sequence of the graphics/compute passes is created and rendering begins.
See res_editor.as file with built-in docs and see Samples with examples.
Second type of script is used to define pipelines which will be selected by the main script.
The pipelines folder contains this type of scripts.
See 'Pipelines' tab in Resource Compilation docs and 'pipeline_compiler.as' file with built-in docs.
res_editor_cfg.as file is auto-generated on first start.
It is used to configure ResEditor folders.
All documentation are in comments to the methods.