Letters
From ARRSEpedia
Largely obsolete method of communication. Once was the time when one could pen a lengthy missive to the Times. These days, the 'Thunderer' will accept text messages.
Not to be confused with post-nominal letters, which indicate the user has either PVR'd, or is none other than Sir Alan Mcilwraith. DSO B&Q MFI
French Letters can be of two types:
