SEN, MCO, GLA ? As a casual but genuinely interested reader I guess that the preceding are "abreviations" of destinations and that with my limited knowledge I guess that GLA could be Glasgow, which incidently only took me half a nano second to type out fully against typing GLA. Should I have a list of these abreviations available for quick reference or is there any chance that destinations can have their actual names typed out fully so that us who not so clued up can understand ?.