ENThe article is devoted the problem of investigation of gleits structural components, which are a particular type of diplomatic documents. On the basis of the register surviving in the Metric books of the Grand Duchy of Lithuania, the author reconstructs the clerical form of the documents, analyzes the features of proceedings and reveals specifics of the gleits, issued to diplomats from different countries. Key words: gleit; list opasnyj; the Metric books of the Grand Duchy of Lithuania; international relation in the Eastern and Central Europe. [From the publication]