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HCL Domino Designer Basic User Guide and Reference
This guide provides information on using HCL Domino Designer and programming language reference information.
What's new in Domino Designer 12?
The following features are new for developers in HCL Domino® Designer 12.
What new in Domino Designer 12.0?
The following features are new in HCL Domino Designer 12.0.1.
XPages support for Bootstrap 4
The XPages Extension Library now supports Bootstrap version 4.4.1.

HCL Domino Designer Basic User Guide and Reference
This guide provides information on using HCL Domino Designer and programming language reference information.
- What's new in Domino Designer 12?
  The following features are new for developers in HCL Domino® Designer 12.
  - What's new in Domino Designer 12.0.2?
    The following features and enhancements are new in HCL Domino Designer 12.0.2.
  - What's new in Domino Designer 12.0.1?
    The following features are new in HCL Domino Designer 12.0.1
  - What new in Domino Designer 12.0?
    The following features are new in HCL Domino Designer 12.0.1.
    - Transaction methods for LotusScript and Java Database classes
      New LotusScript and Java methods are provided for the Database class to record database transactions.
    - Use formula Language in DQL search terms
      In HCL Domino® 12, Formula Language can be used in Domino Query Language (DQL) search terms.
    - NotesQueryResultsProcessor class
      This new LotusScript and Java class aggregates, computes, sorts, and formats collections of documents across any set of Domino databases.
    - XPages support for Bootstrap 4
      The XPages Extension Library now supports Bootstrap version 4.4.1.
    - Hide columns or fields from smaller-resolution screens
      The new onSize event, @RelayoutWindow command, and @ResolutionWidth and @ResolutionHeight formulas allow you to hide columns and fields when they are displayed in smaller-resolution screens.
    - Column properties in narrow views honored in Notes
      Column properties associated with narrow views specified in HCL Domino® Designer are now honored in HCL Notes® applications.
- Accessibility and keyboard shortcuts
  Accessibility features assist users who have a disability, such as restricted mobility or limited vision, to use information technology content successfully.
- Application Design
  Welcome to the Application Design section of Domino® Designer Help.
- Application Management
  Welcome to the Application Management section of Domino® Designer Help.
- Domino® Query Language
  Domino® Query Language (DQL) is a facility running on a Domino server that provides a terse, shorthand syntax for finding documents. It supports a wide variety and complexity of search terms. It leverages existing design elements, avoiding the need to write detailed code to access them. DQL consolidates all methods in Domino for searching document contents.
- Composite Applications - Design and Management
  Composite applications are a key element in a service-oriented architecture (SOA) and contextual collaboration strategy. The ability to create and edit composite applications lets you easily integrate different types of components and technologies.
- DB2® Access views
  Domino® Designer includes two types of design elements to assist you in managing data contained in DB2® enabled Notes® databases:
- Programming Overview and User Interface
  This section contains general guidelines and examples that show where to use Java, LotusScript, and the formula language.
- Formula Language
  This section documents the formula language.
- LotusScript® Language
  Welcome to the LotusScript® Language section of Domino® Designer Help.
- LotusScript/COM/OLE Classes
- Java/CORBA Classes
  This section documents the Java/CORBA classes.
- Connectors
  Connectors provide native access to a wide variety of DBMS products, ODBC, the platform File system, Enterprise Resource Planning systems, and Transaction Processing systems.
- Javadoc™ for Domino® Designer related APIs
  As part of providing additional Java™ reference documentation, Domino® Designer ships with a help plugin that contains Javadoc™ for additional Domino Designer related APIs.

XPages support for Bootstrap 4

The XPages Extension Library now supports Bootstrap version 4.4.1.

This support provides responsive web design enhancements for mobile devices. Applications need to be updated to use Bootstrap 4 controls. Bootstrap 4 controls in XPage Properties.