Converts & to & in HTML files, but does not convert it
when the & is already in an entity e.g. < ϑ
é   The DeAmpify utility converts & back to &.
It works only on *.html *.htm and *.csv files.
The main use for this is to pass HTMLValidator verification
of your HTML, which is very picky about &, especially inside
URLs.
As a side effect, it also ensures all your <!-- ... -->
balance.
It does not change & to &amp; inside comments (or macros masquerading as
comments), though it will change it inside href= and image= urls, or
anywhere else e.g.  Java Applet parameters, which is correct according to
the HTMLValidator.  It does _not_ change " to &quot; < to &lt; or é to
&eacute; It just fixes &, the most troublesome character.
To convert a single file, type:
  java.exe -jar C:\com\mindprod\amper\amper.jar myfile.html
The results replace the old file, so you had better make a
backup just in case this is not what you want.
You can also list several files on the command line:
  java.exe -jar C:\com\mindprod\amper\amper.jar myfile.html C:\mydir\another.html
To use convert the current directory of HTML files:
  java.exe -jar C:\com\mindprod\amper\amper.jar .
Sorry no wildcards, just . , and ..
DON'T USE WILDCARDS unless you deeply understand how they
work. See http://mindprod.com/jgloss/wildcard.html. Windows
expands them, not amper, and feeds them to amper (or any other program)
as a giant list of all the directories and files in the
current directory. Amper will thus tend  process all the files
in your directories, when you just meant to process the files in
the current directory.
The -s switch makes all subsequent directories searched
recursively to include all their subdirectories.
e.g.
  java.exe -jar C:\com\mindprod\amper\amper.jar -s E:\mindprod
will fix all *.html files in the mindprod directory tree,
ignoring other types of files.
The -q option switch suppresses output. Without it, you see
a list of the files it changed.
If you have the jar extension set up as executable, you can
abbreviate:
  C:\com\mindprod\amper\amper.jar .
Amper does not change any character other than &.  It does
NOT convert high ascii codes to their Unicode equivalents.
Doing that is tricky since it depends on knowing for certain
the encoding of the file. If you need to do that now, you can
with a Funduc search and replace script.
To go the other way, to convert &amp; to &, use
  C:\com\mindprod\amper\deampify.jar myfile.html
Why the & icon?  I hope that should be obvious.