fold: Fold with Sliding Windows
In ruthkr/rnafolding: What the Package Does (One Line, Title Case)

Perform folding inference using sliding windows and RNAfold from the ViennaRNA Package 2.0 by Lorenz et al. doi:10.1186/1748-7188-6-26.

fold(
  filename,
  winsize,
  stepsize,
  same_num_samples = TRUE,
  rnafold_params = "-p",
  verbose = FALSE
)

`filename`	The name of the file which the sequences in FASTA format are to be read from.
`winsize`	Window size of the sliding windows.
`stepsize`	Step size of the sliding windows.
`same_num_samples`	If TRUE, fold will perform additional foldings at the beginning and end of the sequence. This allows the beginning and end of the sequence to have the same amount of samples/windows go through it. This is specially important for calculating Shannon's entropy.
`rnafold_params`	Parameters used by `RNAfold`. The default is `'-p'`.
`verbose`	If TRUE, fold will print information of performance.