//Draft policy
Editorial policy
This policy describes how Sumivo intends to develop, support and correct calculator content.
Methods come first
A calculator begins with defined inputs, outputs, formulas, assumptions, limits and error behavior. Interface copy should explain that method without implying more certainty than it supports.
Expected values are independent
Test fixtures should be established separately from the code under test. Reference examples, boundary cases and invariants are retained so a change can be checked against known expectations.
Sources are versioned
Source records identify the material, publisher, version or date, applicability and exclusions. Updates to a relied-on source may require a method review and a new method version.
Claims require evidence
Descriptions such as verified, reviewed or authoritative are not used without a supporting record. Search snippets and competing calculators are not treated as sources, and competitor wording is not copied into Sumivo content.
Corrections remain traceable
A reported problem should be reproduced, assessed against the documented method and fixtures, corrected where necessary, and covered by a regression test. A material formula or scope change should update the method version and related explanation.
Development status
This policy is a working draft. Sumivo and its calculators remain in active development, so the policy may be refined before formal publication.