This is messy as hell at the moment, but here are things.

/getwords.cpp

Source for the core of the server - pulls the appropriate length word file and returns a handful of similar words.

/index.html

Links everything together.

/terminal.js

Controls everything.

/styles.css

Makes everything look pretty.

/server.php

Called via Ajax request from index.html, calls getwords.exe and returns its result as JSON.

/words/[2 - 19].txt

Words from "/words/crossword.txt" sorted by length.

/words/crossword.txt

Original word file, courtesy of the Gutenberg project.

/words/parsedictionary.cpp

Used to sort the dictionary by length. Not used at runtime.