I could not find any useful documentation (i.e., with helpful examples) for the package rnn for R.  The only example I could find reverses the timescale without explanation(!?)   If someone went to the trouble of writing this package and recommending/promoting it to the data science world (which is highly laudable) why not make it useful to people by providing helpful documentation?  Or maybe there is a doc did not find?   Thanks for any guidance on this.
Documentation for package rnn in R
rnn