xz is a lossless data compression program and file format which incorporates the LZMA/LZMA2 compression algorithms. One can think of xz as a stripped-down version of the 7-Zip program. xz has its own file format rather than the .7z format used by 7-Zip (which lacks support for Unix-like file system metadata).
In general, an ePortfolio is a purposeful collection of information and digital artifacts that demonstrates development or evidences learning outcomes, skills or competencies.
1.1 What is iReport. iReport is a program that helps users and developers that use JasperReports library to visually design reports. Throught a rich and very simple to use GUI, iReport provide all the most importatnt functions to create nice reports in a little time.