Copy or links of law or act for use of capital names in government document

Currently waiting for a response from Attorney-General's Department, they should respond promptly and normally no later than (details).

Dear Attorney-General's Department,

Please provide the copy or online link to any or all laws or acts or guidelines used in Australia that clearly mandates government department to only use CAPITAL NAMES for their reference and correspondence like licence , medicare card, TFN etc etc.

Yours faithfully,

Ajay Singh

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