Section: FreeMat Functions
path routine has one of the following syntaxes.  In the first form
x = path
path simply returns the current path.  In the second, the current path
is replaced by the argument string 'thepath'
  path('thepath')
In the third form, a new path is appended to the current search path
path(path,'newpath')
In the fourth form, a new path is prepended to the current search path
  path('newpath',path)
In the final form, the path command prints out the current path
path