If you check this box, only the first letter will be written if the letter is found in several places in the word. Then you have to rechoose the same letter, to replace the second instance in the word until there are no more instances of this letter. For example, the word to guess is "potato". If this option is unchecked, when you try "o", the two instances of "o" in the word will be discovered at the same time. If this is checked, you will need to try "o" twice. Default is that for one letter typed, all instances of that letter in the word are discovered.
Má chuireann tú tic sa bhosca seo, ní scríobhfar ach an chéad litir nuair atá an litir san fhocal níos mó ná uair amháin. Sa chás sin, caithfidh tú an litir chéanna a roghnú arís, go dtí nach mbeidh an litir seo fágtha san fhocal. Mar shampla, más é "cothrom" an focal, agus níl tic sa bhosca seo, taispeánfar an dá "o" ag an am céanna nuair a thugann tú "o" mar bhuille faoi thuairim. Má tá tic sa bhosca seo, caithfidh tú "o" a thabhairt faoi dhó. Is é an chéad chás an réamhshocrú.