Before revision:  The basic analysis tool is the determination of the Kronecker structure of linear matrix pencils using numerically reliable algorithms, which is used in conjunction with several linearization techniques of polynomial matrices. An example of a polynomial matrix which exhibits all relevant structural features is considered to illustrate the main mathematical concepts and the capabilities of implemented tools.
After revision:  The basic analysis tool is the determination of the Kronecker structure of linear matrix pencils using numerically reliable algorithms, which is used in conjunction with several linearization techniques of polynomial and rational matrices. Examples of polynomial and rational matrices, which exhibit all relevant structural features is considered to illustrate the main mathematical concepts and the capabilities of implemented tools.