Probably because you didn't download them in the first place. Look at the above list of suggested files and download docs for every package you have. These are usually called *dc.zip (``dc'' for ``docs''). You will also need a program to read the docs, which are hypertext structured files. You have several choices:

• Use the stand-alone Info reader.

  Get the file txiXXXbn.zip, which includes INFO.EXE, and txiXXXdc.zip, which includes docs for INFO.EXE. Unzip them and run info. It will bring up a (hopefully) self-explanatory online help system. Confused? Press ``?'' to see the list of all Info commands. Still confused? Press ``h'' to have Info take you on a guided tour through its commands.

• Use the Info command of your Emacs-like editor.

  If you use Emacs, you already know about Info. (What's that? You don't? Type ``C-h i'' and you will get the top-level menu of all the Info topics.)