5.1 How to write a package?
5.2 How to use context and packages?
5.3 How to find what packages are loaded?
5.4 Finding packages in specific context
5.5 How to find what contexts are loaded?
5.6 How to load an m file or a package?
5.7 Finding names of functions in a package
5.8 Finding a package that has specific function
5.9 Finding all contexts that belong to a package?
5.10 How to remove packages?
5.11 How to list files in a directory?
5.12 Where is init.m and how to use it?
5.13 Reading Mathematica example data and location
5.14 Finding which folders are on trusted path
5.15 save matrix to file, and read it again
5.16 run Mathematica m file as script