In web texts, do not use titles such as Mr, Miss, Dr or Professor.

In other CERN documents, do use Professor (not Prof), Dr, Mr or Ms (not Mrs or Miss) as applicable.

Job titles

Use only one job title for each person. Do not capitalise job titles, unless it is an important government position: Barack Obama, President of the US.

The single exception is CERN Director-General.

"This is a fantastic result for CERN," says ATLAS spokesperson Albert Einstein.

Means a thousand billion, (the same as one million million) but use with care. House style dictates it may be clearer to say 10¹². See numbers.

Use 10¹⁵ rather than quadrillion, unless you are deliberately setting out to put dramatic effect ahead of clarity.

Capital "T" in text – but note there is a lower-case "t" in the Twitter logo. 

All SI units are lower case when spelled out: metre (m), kilogram (kg), second (s), ampere (A), kelvin (K), candela (cd), mole (mol).

Note: The tesla is the SI-derived unit of magnetic flux density. It has a lower-case "t" when spelled out, though its symbol is an upper-case "T".

Spell them out on first mention, then use the symbol.

I weigh 75 kilograms. Last month I gained 4 kg after I stopped running 5 kilometres every morning.