4 GUIDELINES FOR APPLICATIONS

This section gives guidelines on how to develop VLT application software. The intention is to guide through the development, to give hints how to implement typical problems and through examples show how the common software is intended to be used. As the applications on workstations and LCUs normally are quite different, each section points to the specific problems encountered on the workstation and on the LCU.

The CCS and LCC User Manuals, [1] and [2], provides many examples how to use the CCS and LCC software. More examples can be found in the CCS and LCC applications used for testing the installation. They are on the tape distributed in the directories examples/wsapp and examples/lcuapp. The Command Interpreter template delivered with the VLT software in the directory LCCcontrib/citmp gives a template for a Command Interpreter on the LCU. It is also implementing the standard functions required, see section 3.1.4. The template also uses the module too, in directory LCCContrib/too. This module contains tools and utility routines. The template also includes several examples of how to use LCC. See the corresponding README files for more information.

LCC applications are supported by the Command Interpreter as the basic tool to build applications. The description in section 4.2 is based on this.

A similar approach is available for WS applications with the evh tool kit described in section .

The purpose of these tools is to simplify the design and implementation of applications.

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