1. A method of automated analysis of text documents, the method comprising: converting electronic files containing model documents to a predefined format that is capable of representing all characters in all languages that the text documents are written; extracting clauses representing meaningful fragments from the model documents; storing the converted files containing model documents in a database; converting each electronic file containing a document to be analyzed into the predefined format; comparing clauses extracted from the analyzed documents are compared with clauses extracted from the model documents; calculating fractions of clauses from one of the analyzed documents matching clauses from each model document; comparing the fractions with a pre-set threshold value to identify if the analyzed document contains text fragments from at least one of the model documents.