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Work with authorized files.
A file has a source, a purpose, and a permission boundary.
Check your right to use it
Only supply material you are entitled to use for the intended purpose. Access to a file is not permission to redistribute it or send it to any provider.
Define the task first
Identify the question, expected output, relevant sections, source version, and what must remain unchanged. Minimize unrelated material.
Keep the original distinguishable
A transformed artifact should identify its source and material changes. Preserve uncertainty rather than silently filling missing rows, pages, or context.
Review the result
Compare the artifact with the requested outcome. Check completeness, calculations, citations, formatting, accessibility, and rights-sensitive material where relevant.
Understand the data flow
Before a public upload feature opens, its supported formats, size limits, recipients, retention, deletion, and security controls need verified disclosure.
The preview’s source
The order-counts example is bundled with the page. No file is uploaded, no private filesystem is accessed, and no supplied content is processed by this website.