Function Reference
— Built-in Function: addpath (dir1, ...)
— Built-in Function: addpath (dir1, ..., option)

Add dir1, ... to the current function search path. If option is ‘"-begin"’ or 0 (the default), prepend the directory name to the current path. If option is ‘"-end"’ or 1, append the directory name to the current path. Directories added to the path must exist.