not "implementor"

not "in light of"

Institut national de physique nucléaire et de physique des particules (French National Institute of Nuclear and Particle Physics)

Acronym doesn’t need spelling out for the CERN Courier

Istituto Nazionale di Fisica Nucleare (Italian National Institute for Nuclear Physics)

Acronym doesn't need spelling out for the CERN Courier

to take out insurance

Not to be confused with ensure, which means "to make sure"

International Gamma-Ray Astrophysics Laboratory

Spell out in first use then use acronym for the CERN Courier

use italics

not interconnect

use initial capital letters

The inverse femtobarn (fb⁻¹) is a measurement of particle-collision events per femtobarn; a measure of both the collision number and the amount of data collected. 

An ion is an atom with a net electric charge due to the loss or gain of one or more electrons.

An isotope is each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties. Isotopes are often radioactive.

The standard scientific notation for ions is as follows:

Element^Charge

And for isotopes:

^{Atomic mass}Element

International Particle Physics Outreach Group

Use -ise endings, not -ize.

Follow British English for spelling.

Exception: CERN is the European Organization for Nuclear Research. Note the "z". Use "the Organization" for CERN, otherwise "organisation".

Intersecting Storage Rings

Spell out in first use then use acronym for the CERN Courier

Use italics for foreign phrases, unless they are commonly used in English.

​An exception is eigenstates, which, although a German word, should be written in roman.

Possessive form of it:

The dog is eating its bone.

CERN is changing its name.

​Not to be confused with it's

Joint Advisory Rehabilitation and Disability Board

Joint Institute for Nuclear Research, Dubna (Russia)

Acronym doesn't need spelling out for the CERN Courier