This report presents a description of the use of the nutrient leaching model ANIMO (Agricultural Nutrient Model) version 4.0 with special emphasis on input instructions. Model input is described by its unit, range, data type and variable name in computer code. Program output and operational aspects of program execution are briefly given. Five examples are presented comprising values of input parameters and model results. A brief technical program description is presented focusing on the program structure, the nomenclature and structure of the source code