abbreviations

ESO

European Southern Observatory

Acronym doesn't need spelling out for the CERN Courier

ESRF

European Synchrotron Radiation Facility

Acronym doesn't need spelling out for the CERN Courier

FEL

Free-electron laser

Spell out in first use then use acronym for the CERN Courier. Use "an FEL", not "a FEL"

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