Create Directories in FDL

We recommend that you use the flow description to create directories necessary to run the tools and to collect the results.

You can use one of the methods shown below: 
# Use the Tcl standard  'file mkdir' procedure.
file mkdir $installDir

# Use the VOV extension 'indir -create {}'.
indir -create $subDir {
    # ....
}

# Avoid this method; it is slower and does not work on Windows.
exec mkdir $subDir