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This wiki covers questions regarding the OpenVistA and VistA software, the various components of that software, and configuration and installation of the same. It incorporates information from many people.

A VistA system is made up of the following components:

• Code written in the M Language, implemented by GT.M or Cache.
• Information stored in a M Database.
• Information stored in a VA FileMan File.
• FileMan-level control instructions in Templates:
  • Input Templates for entering or editing data stored in VA FileMan Files.
  • Search Templates for condition based or criteria based search
  • Sort Templatess for sorting and grouping fields when output of information
  • Print Templatess for printing and presenting fields
  • Export Templatess for exporting values of fields to other programming systems.
• Code running in the Host Operating System, such as Microsoft Windows or Linux.
  • for example: Microsoft Windows Script Host scripts, bash shell scripts, tcsh shell scripts,
  • for programmer mode access scripts, system boot scripts, system shutdown scripts.
• Information stored in files in the filesystem of the Host Operating System.
  • simple ASCII text files
  • Comma Separated Values (CSV) files for import into Microsoft Excel, Microsoft Access, or Open Office applications.

Configuration is the process of changing details about a VistA package. These details are fine level controls over the behaviour of the package.

Overview of OpenVistA

• Documentation Overview
• FileMan Overview
• Kernel Overview
• VistA Packages Overview

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Please see documentation on customizing the interface and the User's Guide for usage and configuration help.