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This guidance is an introduction to the Open Document Format (ODF) standard and how you can select ODF-compliant solutions.
Find out how to complete and submit a return using the HMRC spreadsheet or electronic flat text file (EFTF).
Find out how to complete and submit an Other Interest (OI) return using the HMRC spreadsheet or electronic flat text file.
Information about how to upload data to the National Fraud Initiative (NFI) and how to format the data correctly to avoid issues.
Learn how to publish accessible documents to meet the needs of all users under the accessibility regulations.
How to use the common data standards for the criminal justice system (CJS) in England and Wales.
How to create, edit and tag content in Whitehall publisher.
Using Markdown to format content on GOV.UK.
Find out how to create a CSV file to submit your declaration, what file layout to use and how to resolve problems with file upload failures.
Check for file formatting errors and to submit annual returns for employment related securities (ERS) schemes and arrangements.
Use this service to check your files for formatting errors before submitting annual returns for employment related securities.
Use this guidance to find out what you need to provide and how to make a return of information.
When and how to use the GOV.UK formats.
Section last updated December 2015.
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