Word description Searches your computer for the path to a Graphviz executable. If one cannot be found, returns f.
On a Unix machine, this involves looking for circo, dot, fdp, neato, osage, sfdp, or twopi somewhere in your PATH.
On Windows, if you have Graphviz installed into a folder whose name begins with Graphviz in either Program Files or Program Files(x86), that folder will be searched for an executable named circo.exe, dot.exe, fdp.exe, neato.exe, osage.exe, sfdp.exe, or twopi.exe.