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.
Oleptro. Available by prescription, Oleptro is a drug licensed to treat depression. Although it is not exactly known how the medication works, it is thought to balance serotonin levels in the brain and block certain serotonin receptors. This long-acting antidepressant comes in tablet form and is taken only once a day.