Deve ser conciso e informativo. Deve evitar-se abreviações e fórmulas, sempre que possível. Não deve ser escrito em maiúsculas, exceto no seu início ou quando forem utilizadas palavras cuja regra assim o exija.
Should be concise and informative. Must avoid abbreviations and formulae where possible. Should not be written in capital letters, except in your home or when they used words whose rule so requires.
It should be concise and informative. One should avoid abbreviations and formulas where possible. It should not be capitalized except at the beginning or when words are used whose rule so requires.
It must be concise and informative. Abbreviations and formulae should be avoided whenever possible. Should not be written in capitals, except at the beginning or when used words whose rule requires this.