sail: Create a source abstraction interface layer (SAIL) object.
In fail: File Abstraction Interface Layer (FAIL)

This function returns an object of class sail which behaves like fail, but is indented for loading and saving R source code files.

1 2	sail(path = getwd(), extension = "R", all.files = FALSE, use.cache = FALSE, simplify = TRUE, suppressMessages = FALSE)

`path`	[`character(1)`] Path to work in, will be created if it does not exists.
`extension`	[`character(1)`] File extension to work with. Default is “R”.
`all.files`	[`logical(1)`] Also include hidden files, i.e. files whose name start with a dot (“.”). Default is `FALSE`.
`use.cache`	[`logical(1)`] Use a memory cache per global default. Global option which can locally be overwritten in most functions. Default is `FALSE`
`simplify`	[`character(1)`] If only one object is defined in a sourced R file, should the return value be simplified? If set to `TRUE`, instead of a list containing one element the object itself will be returned.
`suppressMessages`	[`logical(1)`] Wrap the `sys.source` command into `suppressMessages` and `link[base]{suppressPackageStartupMessages}`? Default is `FALSE`, i.e. you will see regular output of sourced scripts.