Abbreviations
Irish has a number of abbreviations, most of which, like lch. for leathanach ("p."/"page") and m.sh. for mar shampla ("e.g."/"for example") are straightforward. Two that may require explanation are .i. (which begins and ends with a full stop) for eadhon ("i.e."/"that is") and ⁊rl. or srl. for agus araile ("etc."/"and so forth").
Read more about this topic: Irish Orthography