To type directly with the computer keyboard:
The dot denotes lenition; it is called a ponc séimhithe or buailte. Today, lenition is represented by a following letter h.
Download & install the font Bunchló
• Gaelċó: Celtic fonts: font Bunchló
→ Irish Gaelic language: dictionary, pronunciation, grammar
→ Latin script keyboard for all languages
→ Multilingual keyboard: index