Render (copy) required supporting files for an input document to the _files directory that is associated with the document.

render_supporting_files(from, files_dir, rename_to = NULL)

## Arguments

from

The directory from which the files should be copied.

files_dir

The directory that will receive the copied files.

rename_to

An option to rename the source directory after the copy operation is complete.

## Value

The relative path to the supporting files. This path is suitable for inclusion in HTMLhref and src attributes.