PROFESS 3.0 package contains the following parts: 1) "Makefile". 2) "Source" contains all the PROFESS 3.0 source code. 3) "test" includes 3 examples. 4) "PROFESS3_manual" contains clear instructions on the installation and execution of the program. 5) "PROFESS3_structure" contains the PROFESS 3.0 source code structure information.