1) Network job entry 
It is a ligature of the Cyrillic letters En {angbr|Н} and Soft Sign {angbr|Ь}. It was invented by Vuk Stefanović Karadžić. It corresponds to the digraph {angbr|nj} in the Serbian Latin and Croatian alphabets. It is used in Macedonian and Serbian, where it represents a palatal nasal /ɲ/, similar to Spanish {angbr|ñ} in `señor` (cf. Polish.....
Network Job Entry (protocol) [IBM]