Routine corrections (grammar, formatting) to ordinary letters are not historically significant. But substantive changes to important drafts show how the communication evolved and who changed what — which is valuable for accountability and understanding the decision-making process.
Source: CSMOP Para 25
What is the sequence of certification?
Why must Ministerial oral orders be confirmed in writing even when they follow the rules?
Does this rule apply to social media accounts of Ministries as well?
What is the key difference between a D.O. letter and a regular letter?
Who is responsible for keeping the residential address list of Section staff?
This answer is for informational purposes only and does not constitute legal advice. Always refer to the original rules and consult competent authorities for official interpretation.