Existing in a variety of forms, the quatrain appears in poems from the poetic traditions of various ancient civilizations including Ancient India, Ancient Greece, Ancient Rome, and China; and, continues into the 21st century, where it is seen in works published in many languages.
I always thought that Mgr. refers to a manager and that's what you find in dictionaries as well. People in Czech use it to stress the fact they are the boss:) Magistr does apply to Master, as in Master's degree, and short versions are M, MAS, or mstr.
Meaning of Cerny. Czechian name. In Czechian, the name Cerny means - black.The name Cerny originated as an Czechian name. The name Cerny is most often used as a boy name or male name. Czechian Name Meaning - black. Origin - Czech-Republic.