Softpanorama

May the source be with you, but remember the KISS principle ;-)
Contents Bulletin Scripting in shell and Perl Network troubleshooting History Humor

Logitech Wireless Performance Mouse MX

News Selecting the Best High End Programmable Multi-button Mouse Recommended Links Mouse Grip types Logitech G600 MMO Gaming Mouse Logitech Marathon Mouse M705
Logitech SetPoint Event Manager (UNICODE) has encountered a problem and needs to close         Keyboards
Basics of Preventing RSI for pro Tendinitis Carpal tunnel syndrome Sysadmin Horror Stories Humor Etc

This is a unique nine button mouse (three standard buttons, left and right tilt clicks for scrolling wheel and four additional buttons on the left side of the mouse) but only five are of them are usable. It is overpriced (compare with Logitech G600 MMO Gaming Mouse  and Logitech Marathon Mouse M705).   Logitech Marathon Mouse M705 is very similar can be bought twice cheaper. In some aspects is is better mouse and exceed in functionality this one.  for example it does not have the problem of way too short battery life.

The key feature of this mouse is the unique  thumb button at the bottom. This is an excellent, innovative idea that makes this mouse really special.  It is also present in very few other Logitech models such as Logitech Marathon Mouse M705. I never saw such button in Microsoft mice. It is really convenient to use although Sidewinder X5 has two convenient vertical buttons too. That put this mouse in a pretty unique (and superior to alternatives) class of mice with two vertical buttons.

It is not easy to learn to use this "bottom" button as old habits die hard. You need to train yourself to use this new button productively. Unfortunately those skills do not come automatically. Moreover, if you do not pay attention to training, you will discover that soon you revert to your old habits and use this mouse as a regular 5-button mouse.

Other then that this is an average, but overpriced mouse with mediocre, buggy software (in Windows 7 if you try to edit the last line on the screen you have difficulties and need to move the line up).  Tracking is good, this is now a norm; you can get similar quality of tracking from $20 mouse. Middle button click is horrible -- this is a major defect of this model.  Low profile receiver is very nice, and the fact that it can work also with Logitech keyboards is a nice engineering touch. But it is typical for all Logitech mice.  Other manufactures now produce similar low profile receivers too.

Please note that the micro USB cable is only for charging.   The mouse still requires the receiver to be plugged. Fully charges battery lasts about 7 days of moderate use. The Performance MX uses an cheap 1900 mAh AA NiMH rechargeable battery - which comes included in the packaging. This can be substantially improved using more expensive higher capacity battery. They do not recommend using a regular AA battery (probably becuase voltage is slightly higher). If battery is discharged and you have no replacement battery, you need two USB slots to use the mouse (one for receiver and one for a charging cable) which might be a problem for notebook users (but this is really desktop mouse, so this does not matter much).  But to carry this mouse on a plane would be counter-intuitive since in mice size terms, this thing is a "rat" :-).

But it suffers from two major and one minor problems:

  1. Battery life is too short with the supplied rechargeable battery (less then a week). But is acceptable with a regular AA battery (up to a month). But again they do not recommend using it. I lost one mouse and I suspect tiether this fact ot hte fact that I did not switch mouse off before replacement of the battery, might be factors that sped it demise.
  2. The latest version of SetPoint (6.51) has bugs on Windows XP. It simply periodically crashes and since that point you have no access to additional buttons. You need to use older version of SetPoint, such as 4.8 to avoid those systematic crashes. Fortunately, this older versions also has the ability to customize buttons "per application". Both versions do not have macro capabilities which is strange for this price range.

    This downgrade suggests that as a software developer Logitech really sucks. I would expect a debugged software, if I pay $70 for the Premium mouse. It's like buying a Cadillac and discovering that you can't open windows with any of the buttons.

    Please note that if you downgrade the driver from 6.51 to 4.80 you lose all your settings. Another example of Logitech incompetence as a software developer.

  3. In Windows 7 the latest version of Setpoint behave funky in the last line of the screen.

As for minor problem: there is no compartment to store Logitech Unifying receiver with the mouse body. Also instead of zoom button they should use a wheel like in MX Revolution. This is a foolish attempt to save money on the part of Logitech...

I would not recommend this mouse at this price range if you pay your own money. It should be discounted 50% to, say, $35 to became viable.  If it OK, if your company pay for it.

The problem with middle click

The key problem with the mouse is stiff and unreliable click of middle button. You need to press scrolling wheel vertically down for it to register (despite the fact the surface is tilted) And even in this case sometimes it register the click and sometimes it does not. Sometime you feel the click, but it is not registered. In other words the middle button works randomly. I ended up working around the issue by remapping middle click to the bottom button to be the middle button. This is not a show stopper but for $80 mouse is pretty disappointing. A mouse at this price range should not have such an obvious design flaw. People who use middle button a lot (like CAD users) beware. This is not a good option. Here is a typical review

I used an MX Revolution today and the scroll wheel also has a "click." I found, however, that I needed to press a lot past the click and it was VERY inconsistent as to which angle you pressed down to activate the middle click. I tried pressing directly down, on the lower third of the wheel, etc...

I use CAD software and middle click is very important for me. I have an old Microsoft optical mouse that has very light scroll wheel which makes for very easy middle clicks. I know with the Logitech's you can re-program buttons to act as the middle click but that's not comfortable for me

Left and right tilt on the scrolling wheel ((sideways scroll)) produce clicks but the no audible ot tackile feedback. This make them too sensitive and too random to be useful. It is better to disable them (or unify them with middle click, slightly improving performance of the latter) and get another mouse if you really need them.

Forward button is difficult to reach from the position optimal for using tilt wheel, and that makes is semi-useful too. Back buttons and zoom button are usable. BTW the zoom button which is found under those two buttons is not something that at least initially you'll find without looking.

Shape of the mouse is somewhat high. For people with small or medium hands it is not ergonomic and you feel strain using is for prolong periods. Buyer beware.   

SetPoint software is pretty primitive (no real macro capabilities), but adequate because macro capabilities for mouse are less useful then for keyboard. Latest version 6.51 has application specific settings. If you really need macro functions  the easiest workaround is to remap buttons you can do this in two steps. First map them to some obscure keyboard keys (for example, Calc, Pause, etc) and then assign macros to those keyboard keys.

Here is my Amazon review:
Logitech Wireless Performance Mouse MX for PC and Mac (Personal Computers)

Several gotchas, short battery life, bad middle click, December 26, 2012

It's not a bad mouse while it works. But it has a set of gotchas you better know about.

Mouse lasted for 6 months or so and then abruptly died (never recovered from low battery state). So please beware that this mouse should use only NiMH battery (alkaline that I have used were not recommended, but I did not know about that) and switch the mouse off before replacing the battery and then switch it on. Not following this procedure probably have led to demise of my mouse. Please read Logitech FAQ item "Changing the battery in my Performance Mouse MX".

While it was working it was not bad, but definitely overpriced. On PCB surfaces (cooking boards are a nice mouse pad replacement ;-) is moves very smoothly, but I suspect that it produces (at lease with the version of Setpoint 6.51 on Windows 7 that I used) strange effect: the screensaver does not activate and logging off a user sometimes takes forever. Sensor just does not switch off unless you move the mouse on "conventional" surface. But this is just my guess. I never verified it.

The bottom button is a brilliant invention and is very useful (I assigned Enter to it and used it quite a bit). Only few other mice (and only from Logitech) have such a button. It does not take a lot of time to get used to, but your skills are lost if you use one mouse at work, but the other different one at home.
There are a couple of other problems:

1. Difficulties in clicking the wheel. You can adapt to push wheel straight down. But it does destroy the ability to use tilt. You need to de-assign those functions is you use middle click often as they will invoked randomly instead of middle click.

2. Positioning of back, forward and zoom buttons are suboptimal. Actually the idea of using back and forward buttons is questionable and IMHO the only mouse where they were usable was Microsoft X4 mouse (which used vertical positioning on those two buttons). In this mouse depending on your grip only one button is usable, the other is practically useless. In the past Logitech did have an innovative solution to this problem using the wheel on the thumb side in MX Revolution which is the best solution of all. The fact that this solution was dropped is a huge disappointment.

3. Battery life is too short with the supplied rechargeable battery (for me it was typically less then a week). That's why I changed to regular AA batteries which again are NOT recommended and might be a cause that my mouse went south.

3. Charging cord is badly thought out and does not allow to use mouse as corded mouse (you still need a receiver). It connects under an angle, the nuance which you need to get used to. But you can use any changer with compatible plug, for example for Blackberry or Android cellphones.

4. IMHO SetPoint software is not well debugged. Functionality is adequate and it allows "per application" button assignments. But reliability is suspect. I started using this mouse in Windows XP and the latest version simply periodically crashes and since that point you have no access to additional buttons. You need to use older version of SetPoint, such as 4.8 to avoid those systematic crashes with the message:

Logitech SetPoint Event Manager (UNICODE) has encountered a problem and needs to close

In Windows 7 I encountered a strange effect of erratic behavior at the bottom of FrontPage screen. Only the last line was affected.

As for minor problem: there is no compartment to store Logitech Unifying receiver within the mouse body.
And again, shame on Logitech: instead of zoom button they should use a wheel like in previous versions. I think that replacement of the wheel with the button is a badly thought out and badly executed attempt to save a couple of dollars. But sometimes excessive zeal backfires and I think Logitech might feel the pain in this case: Microsoft Wireless Rechargeable Laser Mouse 7000 costs around $25 and is competitive, if you do not value much the bottom button functionality too much (or if you can't adapt to using it, which also can be the case). Battery lasts several months.

I would not recommend this mouse at this price range, if you pay your own money. It is overpriced, unreliable/capricious and IMHO should be discounted 50% to, say, $35 to became viable. But on company money this is a very nice mouse and it can speed up several common operations substantially, if you reassign bottom thumb button and zoom button to functions you need most often.

So my three stars is for home users. I would probably add a star for corporate users ;-)


Top Visited
Switchboard
Latest
Past week
Past month

NEWS CONTENTS

Old News ;-)

[Aug 08, 2013] display - Windows 7 Screensaver not always turning on

I think this might be the case with Performance MX

[Aug 8, 2013] Changing the battery in my Performance Mouse MX - Logitech FAQ

Battery Replacement Tips
  • For best battery performance, always use quality NiMH batteries.
  • Do not use alkaline batteries in this product.
Installing New Battery

Install the battery for your mouse by making sure the battery faces the correct direction as shown in the image below.

Super User

hat kind of mouse do you have? Some older mice incorrectly register movement on certain surfaces like wood or glass, automatically interrupting the screensaver. In addition, Vista and Windows 7 have a feature where Windows automatically increases the delay if the screensaver is interrupted shortly after activating. If the mouse has indeed been interrupting the screensaver for the whole night, the screensaver might not activate even if you wait for those 15 minutes.

Try unplugging your mouse for one night and see whether the screensaver has activated in the morning.

Logitech Wireless Performance Mouse MX for PC and Mac Electronics

A. Weeks "Math & Science!" (Texas) - See all my reviews
(REAL NAME)

An autocad user review:, December 5, 2011

I use it for cad work and love it actually. The fit is near perfect for my hand, buttons are well placed, and it has a good weight to it. Ive set all the extra buttons to the following for autocad; lower thumb:open, left scroll wheel:escape, right scroll: mute (just in case my boss has something to say), zoom:save, i set the thum up/down to move through the last commands (handy for when you want to go back 2 or three commands real quick), and right click: repeat last command (i prefer it to the spacebar for repeat). This setup keeps my left hand pretty free. I am not experiencing the battery issues other users are. I use it all day for 8-9hrs and have to plug it in once a week at most.

What is also nice is the setpoint software that lets you set different button configurations for different applications. I can go from autocad to Battlefield 3 and it changes the button config automatically.

What I don't like about this mouse is the left and right scroll have no click to them and require very little push to activate. Because of the slight angle the wheel sits (it leans slightly to the left) it's easy to inadvertently hit left scroll when you center click. Which may be a problem depending on what you set it to in autocad if you use the middle button to pan around. This positioning also makes it a little awkward to hit the right scroll. These issues take of the one star.

That being my only gripe, I like this mouse so much that I almost bought one for home use... until i saw the $80-$100 price tag (and still almost got it). Instead I settled on the M705. This mouse is smaller than the Performance MX but the contours are very close with the body being shorter. The thumb area isn't quite as large as the Performance MX but still offers good support. Now, if you have larger hands you will find the mouse wheel and thumb up/down buttons too close. If you have smaller hands, it's fine. The M705 is short one button (the thumb zoom) but besides that it is a good substitute. The big plus the M705 has it the scroll wheel has the physical left and right scroll click and isn't as sensitive so you wont accidentally hit it while middle clicking. It's not rechargeable but the batteries are supposed to last for ~3yrs. Plus at half the cost (50 in store, 40 on amazon) I'm happy with it.

Andy G (Madison, WI USA) - See all my reviews

Almost awesome, but an awful middle mouse button, September 5, 2011

Overall this is a comfortable, functional, and well thought-out mouse.

However, the middle mouse button is really not right. Unless you click it at just the right angle the click won't register. Worse for my usage needs (gaming and graphic design programs), when clicking the middle button it's very easy to accidentally trigger the mouse wheel. That can be awfully when you're gaming or working in Adobe Creative Suite.

It's slick that the wheel comes with two levels of resistance, one for fast smooth scrolling, and another for the more traditional graduated scrolling with resistive clicks. However, even in the traditional mode the wheel doesn't offer enough resistance, so it was far too easy for me to trigger scrolling.

It sounds like some people have no problem with the middle wheel/button. I assume it's a different in hand size, shape, or mouse grip. However, others have reported the same problem as mine. For $100 it's unacceptable.

If the middle button & wheel weren't so important for my uses I'd be very happy. As it is, though, I'm returning it.

mattbeck - See all my reviews
Get an MX Revolution instead, August 16, 2010

I have had a Logitech MX Revolution for a number of years and was feeling like getting a new mouse and purchased this one on a whim...

This mouse is awful actually. Anyone who gives it a good rating is completely ignorant of the MX Revolution, or just completely ignorant in general (sorry but I am being HONEST). I am shocked that there are 112 people who gave this a 5 star rating. I wish that I could send all 112 of those people a MX Revolution and watch as ALL their reviews all go from 5 -> between 1 and 3.

Major Issue #1:
The "hyper-fast" scrolling that was introduced with the MX Revolution is awesome! Basically the wheel goes from "Click-click-click" mode (like traditional mouse wheels) to a free-spinning mode that lets you fly through documents and webpages. On my MX revolution you can trigger this free-spinning mode a number of ways. You can either have a button that switches, or you can actually configure a threshold where, if you spin the wheel hard enough, the mouse will actually switch all on it's own. Then, once you stop, it will go back to "click-click" mode. I use this because it really feels much nicer than having to hit the button all the time. It is easily the best feature I have had in a mouse since the advent of the scroll wheel itself.

I figured the "hyper-fast" scrolling on this mouse would be the same. Boy, was I sorely mistaken. It can only be toggled between click-click mode and free mode using the button just below the scroll wheel. After just a couple times of doing this, my wrist starts hurting. The button is also far enough away that you can flick the wheel and hit the button in one motion. So you have to resort to predicting that you are going to want the free-spin mode, hit the button, flick the wheel, then hit the button again to go back to click-click. This sucks with a super tight seal. I am shocked that Logitech has taken such a giant leap backwards (probably to save a couple bucks on production).

Issue #2:
The middle button doesn't really work to well, which has actually been a problem with a number of Logitech mice that I have used (and there have been many). You end up triggering the mouse wheel to easily, or it goes *click* and nothing happens. BOOOO

Issue #3:
The left-right scrolling gives almost no tactile feedback, so you can't always tell if you are doing it or not.

There are a couple things that ARE nice about this mouse (but they don't make up for the issues above):

The darkfield sensor does seem to be pretty awesome. I didn't try it on glass or anything, but i felt like the mouse performed better than my MX Revolution.

The stealth button is pretty cool. Good placement, because your thumb is always right there.

The shape is okay. I like the MX revolution better, but I think it is because I am used to it. I think that if I could stand to spend more time with this mouse I might end up liking the shape more.

Overall, just go but the older MX revolution, you will be MUCH happier.

M. Johnson "emjay" (in yo face, USA) - See all my reviews
Middle Click Ruins Product, November 20, 2010

I have owned many mice in my life. Some $5, some $60, and the Logitech Performance MX is easily the most I have ever spent on an input device.

With that price comes certain expectations, perhaps things like aesthetics and usability features. The basic ability for a critical button to even function correctly is not a factor that should come into play at this level..., but it does. In this case, the middle click works about 60% of the time. I repeat, 60% OF THE TIME, due to the poorly designed wheel. That would be completely unacceptable for a $5 mouse, and is beyond abhorrent for the asking price of this "premium" mouse. This is the basic functionality any entry-level mouse can achieve without even trying. Good work Logitech.

If you need that button to function at all reliably, DO NOT BUY THIS MOUSE. Most Amazon reviewers do not care about this functionality, but do a few other searches around the web. You will quickly see that this a ridiculously widespread problem.

I hate how it's such a beautiful, smoothly operating mouse, with a critical design flaw a 5-year old tester should have identified before it was produced and presented to the public.

Avoid like the plague.

Mr Timothy Sullivan (East Melbourne, VIC Australia) - See all my reviews
middle mouse button useless for CAD, May 17, 2012

This mouse has some major design problems.

As an architect, i use the middle button more than 50% of the day to navigate around my CAD models.

After complaining to logitech they sent me another one, which was great, but same exact problems. I'm now sending them back for a refund. considering i got the first one at 50% off, and they sent me two that makes them $20 each... and to me, they still aren't worth it.
J. L. Coleman (Boston, MA USA) - See all my reviews
Middle button poorly designed, March 12, 2012

When I first got this mouse I loved it. It felt great and is extremely precise. However I bought it for my job, where I use mainly 3D software all day. When navigating in 3D, you need the middle mouse button a lot. This middle mouse button is a huge flaw. The scrolling is nice, but when you press down on the scroll wheel, it does not click unless you are coming from a very specific angle that is not natural for how the mouse is angled. I found myself trying to press the scroll wheel and accidentally pressing the left button in addition or instead of middle button because of the extremely awkward angle. I could of course remap one of the other 4 buttons to be a middle click, but it still is very disappointing that such an expensive top of the line mouse would have such a major design flaw.

Recommended Links

Softpanorama hot topic of the month

Softpanorama Recommended

Top articles

Sites

Manuals for Performance Mouse MX (M950) - Logitech FAQ



Etc

FAIR USE NOTICE This site contains copyrighted material the use of which has not always been specifically authorized by the copyright owner. We are making such material available in our efforts to advance understanding of environmental, political, human rights, economic, democracy, scientific, and social justice issues, etc. We believe this constitutes a 'fair use' of any such copyrighted material as provided for in section 107 of the US Copyright Law. In accordance with Title 17 U.S.C. Section 107, the material on this site is distributed without profit exclusivly for research and educational purposes.   If you wish to use copyrighted material from this site for purposes of your own that go beyond 'fair use', you must obtain permission from the copyright owner. 

ABUSE: IPs or network segments from which we detect a stream of probes might be blocked for no less then 90 days. Multiple types of probes increase this period.  

Society

Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers :   Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism  : The Iron Law of Oligarchy : Libertarian Philosophy

Quotes

War and Peace : Skeptical Finance : John Kenneth Galbraith :Talleyrand : Oscar Wilde : Otto Von Bismarck : Keynes : George Carlin : Skeptics : Propaganda  : SE quotes : Language Design and Programming Quotes : Random IT-related quotesSomerset Maugham : Marcus Aurelius : Kurt Vonnegut : Eric Hoffer : Winston Churchill : Napoleon Bonaparte : Ambrose BierceBernard Shaw : Mark Twain Quotes

Bulletin:

Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 :  Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method  : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law

History:

Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds  : Larry Wall  : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOSProgramming Languages History : PL/1 : Simula 67 : C : History of GCC developmentScripting Languages : Perl history   : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history

Classic books:

The Peter Principle : Parkinson Law : 1984 : The Mythical Man-MonthHow to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Haterís Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite

Most popular humor pages:

Manifest of the Softpanorama IT Slacker Society : Ten Commandments of the IT Slackers Society : Computer Humor Collection : BSD Logo Story : The Cuckoo's Egg : IT Slang : C++ Humor : ARE YOU A BBS ADDICT? : The Perl Purity Test : Object oriented programmers of all nations : Financial Humor : Financial Humor Bulletin, 2008 : Financial Humor Bulletin, 2010 : The Most Comprehensive Collection of Editor-related Humor : Programming Language Humor : Goldman Sachs related humor : Greenspan humor : C Humor : Scripting Humor : Real Programmers Humor : Web Humor : GPL-related Humor : OFM Humor : Politically Incorrect Humor : IDS Humor : "Linux Sucks" Humor : Russian Musical Humor : Best Russian Programmer Humor : Microsoft plans to buy Catholic Church : Richard Stallman Related Humor : Admin Humor : Perl-related Humor : Linus Torvalds Related humor : PseudoScience Related Humor : Networking Humor : Shell Humor : Financial Humor Bulletin, 2011 : Financial Humor Bulletin, 2012 : Financial Humor Bulletin, 2013 : Java Humor : Software Engineering Humor : Sun Solaris Related Humor : Education Humor : IBM Humor : Assembler-related Humor : VIM Humor : Computer Viruses Humor : Bright tomorrow is rescheduled to a day after tomorrow : Classic Computer Humor

The Last but not Least


Copyright © 1996-2016 by Dr. Nikolai Bezroukov. www.softpanorama.org was created as a service to the UN Sustainable Development Networking Programme (SDNP) in the author free time. This document is an industrial compilation designed and created exclusively for educational use and is distributed under the Softpanorama Content License.

The site uses AdSense so you need to be aware of Google privacy policy. You you do not want to be tracked by Google please disable Javascript for this site. This site is perfectly usable without Javascript.

Original materials copyright belong to respective owners. Quotes are made for educational purposes only in compliance with the fair use doctrine.

FAIR USE NOTICE This site contains copyrighted material the use of which has not always been specifically authorized by the copyright owner. We are making such material available to advance understanding of computer science, IT technology, economic, scientific, and social issues. We believe this constitutes a 'fair use' of any such copyrighted material as provided by section 107 of the US Copyright Law according to which such material can be distributed without profit exclusively for research and educational purposes.

This is a Spartan WHYFF (We Help You For Free) site written by people for whom English is not a native language. Grammar and spelling errors should be expected. The site contain some broken links as it develops like a living tree...

You can use PayPal to make a contribution, supporting development of this site and speed up access. In case softpanorama.org is down you can use the at softpanorama.info

Disclaimer:

The statements, views and opinions presented on this web page are those of the author (or referenced source) and are not endorsed by, nor do they necessarily reflect, the opinions of the author present and former employers, SDNP or any other organization the author may be associated with. We do not warrant the correctness of the information provided or its fitness for any purpose.

Last modified: September, 12, 2017