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Files and folders

File or directory Purpose
*.nxscript Nexus Script definitions or recipes
*.nxproject Nexus Build project description
*.nxpackage Package-oriented editor/document surface
*.nxu Nexus Pascal compiled unit
*.nxp Nexus Pascal package metadata
*.nxpk Compiler-native package declaration
*.nxpl Runtime package image
NXBuild.Environment.nxscript Editable installed tool settings
nxpc.cfg Nexus Pascal driver/compiler configuration
sdk.json Runtime-package SDK identity and file manifest

Installed Nexus separates bin/, compiler/, scripts/, nexus2d/, extension/, and licenses/. The compiler directory holds host executables, destination RTLs, and the native package SDK.

Paths in project and Nexus Forge descriptions use / even on Windows. Relative path meaning is owned by the consuming tool: a Nexus Build input uses its project root; a module path uses its declaring document.

See Nexus Build and source builds for output-root behavior. Filenames do not imply a dependency or execution phase.