System modules

A system module is a module shipped with the platform. An application project pulls these modules in via REQUIRE and uses their declarations (classes, properties, actions, forms) as a ready-made standard library; the platform never expects them to be redefined.

System modules live under server/src/main/lsfusion/ in the platform repository: core modules under the system/ subfolder, additional utility modules under utils/. The System module is pulled into every project build automatically; the rest require an explicit REQUIRE.

Inventory

Core (system/)

Module	Purpose
System	Root types, base classes, infrastructure. Pulled in automatically by every module
Time	Date and time properties and operations
Authentication	Users, contacts, sign-in
Security	Access policies
Service	Service actions, database monitoring, aggregation recalculation
SystemEvents	Server-lifecycle events
UserEvents	User-action lifecycle events
Reflection	Metadata about the navigator, forms, properties
Scheduler	Scheduled actions (see Scheduler)
Email	Outbound email
Icon	Standard UI icons
Utils	A collection of helper properties and actions: file system, encoding, strings, numbers, JSON, full-text search, and so on

Auxiliary (utils/)

Module	Purpose
Backup	Database backup and restore (see Backup and restore)
Chat	In-application chat (see Chat)
Eval	Runtime execution of lsFusion code (see EVAL)
Excel	XLS / XLSX file handling
Document / Word	Printable documents and templates
Image / OpenCV	Image processing
I18n	Machine translation of strings
Integration	Generic integration actions
MasterData	Base templates for master-data classes
Numerator	Generic number generators
Hierarchy	Hierarchical properties
Historizable	Change-history storage
Geo	Geographic data and operations
Printer / QZTray / Sound / Com	Access to client-side hardware
ProcessMonitor / Profiler	Server management and monitoring
RabbitMQ / WebSocket / messengers	External transports
SQLUtils	Database service operations
DefaultData	Initial demo data
Schedule	Calendars and working intervals

The full list follows the contents of server/src/main/lsfusion/{system,utils}/ in the platform repository. Modules with a dedicated article link there.

Language

• Module header — the MODULE / REQUIRE syntax used to pull in system modules.