At Hartnall Digital Solutions, we provide detailed and thorough documentation for your legacy systems. Our aim is to make the maintenance, understanding, and potential upgrading of these systems as smooth and efficient as possible.

1. System Overview: 

   - Detailed description of the system’s purpose, history, and evolution.

   - High-level architecture and design principles.

2. Technical Specifications:

   - Hardware and software requirements.

   - Programming languages, frameworks, and libraries used.

3. Code Documentation:

   - Explanation of key modules, classes, and functions.

   - inputs, outputs, pre-conditions and post conditions.

4. Data Structures:

   - Class and object diagrams.

   - Database schema and entity relationships.

5. Process Flows:

   - User workflows.

   - Business rules.

7. Maintenance and Troubleshooting:

   - Common issues and their resolutions.

   - Step-by-step troubleshooting guide.

   - Backup and recovery procedures.

Benefits:

- Enhanced Understanding: Gain a clear and comprehensive understanding of your legacy system’s workings.

- Streamlined Maintenance: Facilitate easier system maintenance and troubleshooting.

- Informed Decision-Making: Support strategic decisions about system upgrades or migrations.

- Knowledge Transfer: Ensure critical system knowledge is documented and preserved for new team members.

Our legacy system documentation services ensure that you have a clear, organized, and comprehensive reference for your existing systems, enabling smoother operations and informed decision-making.