jquery.sendkeys.js is a javascript bililiteRange plugin (see https://greasyfork.org/en/scripts/24818-bililiterange/code and https://github.com/dwachss/bililiteRange )
This script should not be not be installed directly. It is a library for other scripts to include with the meta directive // @require https://update.greasyfork.org/scripts/374554/646475/jquerysendkeysjs.js
Github repo: https://github.com/dwachss/bililiteRange
bililiteRange is a javascript library that abstracts text selection and replacement.
The basic function is in bililiteRange.js, with the documentation at http://bililite.com/blog/2011/01/17/cross-browser-text-ranges-and-selections/
The other files are assorted javascript libraries that use bililiteRange:
bililiteRange.ex.js: Implements the ex line-editor ( http://ex-vi.sourceforge.net/ex.html ). Depends on the util and undo libraries below. Documentation at http://bililite.com/blog/2014/04/03/new-bililiterange-plugin-ex/
bililiteRange.fancytext.js: Uses bililiteRange to allow using the Prism syntax highlighter (prismjs.com) to create a simple syntax-highlighting text editor. Documentation at http://bililite.com/blog/2013/12/16/simple-syntax-highlighting-editor-with-prism/ bililiteRange.fancytextasync.js: Like fancytext but allows stacking multiple highlighters asynchronolously.
bililiteRange.util.js: Adds useful functions for searching and keeping the ranges up-to-date with changes in the underlying text. Documentation at http://bililite.com/blog/2013/02/08/bililiterange-plugins/
bililiteRange.undo.js: Adds an undo/redo stack to editable elements. Documentation at http://bililite.com/blog/2013/12/25/bililiterange-undo/
jquery.jsvk.js: A jQuery plugin to use Ilya Lebedev's JavaScript VirtualKeyboard (http://www.allanguages.info/). Depends on bililiteRange for character insertion. Documentation at http://bililite.com/blog/2013/01/30/jsvk-a-jquery-plugin-for-virtualkeyboard/
jquery.keymap.js: Not really part of the bililiteRange family, but I use them together. A jQuery plugin to turn keydown codes into understandable characters. Also includes a "hotkeys" plugin that allows keystroke handlers for specific keys, like $(el).on('keydown', {keys: '^A'}, function(){}) . Documentation at http://bililite.com/blog/2015/01/12/rethinking-keymap/
jquery.livesearch.js: jQuery plugin to do "live" searching for a regular expression; highlights the text found and scrolls to it as you type. Documentation at http://bililite.com/blog/2013/03/07/new-jquery-plugin-livesearch/
jquery.savemonitor.js: jQuery plugin to track when an element changes and when it is saved. Documentation at http://bililite.com/blog/2014/01/16/new-jquery-plugin-savemonitor/
jquery.sendkeys.js: jQuery plugin to simulate keypresses. Documentation at http://bililite.com/blog/2015/01/14/rethinking-fn-sendkeys/
jquery.status.js: jQuery plugin to display messages and get user input. Documentation at http://bililite.com/blog/2013/12/12/new-jquery-plugin-status/
The other files are not mature and are not documented at all.
