In Microsoft Windows, a screenshot of the entire monitor, complete with taskbar, can be copied to the system clipboard by pressing the Prt Sc key. Alternatively, pressing Alt+Prt Sc will copy just the active window to the clipboard. You can then paste the clipboard into a program like MS Paint or Paint.NET using Ctrl+V, and then save it as an image file (for uploading to Wikipedia, for instance).
In Mac OS X, simply prepare your screen to how you want it to look, then hit ⌘ Cmd+⇧ Shift+3 (not the number pad 3) simultaneously. The new image will appear as a PNG on your desktop. Additionally, if you only want to capture part of the screen, you can hit ⌘ Cmd+⇧ Shift+4, click and drag over the part of the screen you would like to capture and release, also saving it as a PNG on your desktop.
While I was a seasoned Apple Macintosh computer professional, my personal interest is as a Postal Historian specialising in Irish Postal history and aerophilately of Ireland for the last 40 years. My particular interest is in civil postal censorship of Irish mail by both the British and Irish authorities during The Emergency.
For my sins I acted as webmaster for several philatelic societies because I wanted to provide as much quality educational information to fellow philatelists and postal historians.
This barnstar is in recognition of your endless efforts to improve Wikipedia. Autarch (talk) 14:49, 16 January 2009 (UTC)
The Copyright Cleanup Barnstar
Awarded for very good work dealing with stamp images that aren’t appropriate for use here. Stifle (talk) 13:25, 11 June 2009 (UTC)
The Random Acts of Kindness Barnstar
For your continued advice and assistance, your article ratings and for cheering me up quite a lot at this moment in time. It’s about time I gave you a barnstar. candle•wicke 03:24, 23 June 2009 (UTC)
For your ongoing and persistent attention to copyright issues. You do your Wiki good service. Moonriddengirl(talk) 14:06, 30 January 2010 (UTC)
For your humongous work on Irish Categories please accept;
The Irish Barnstar of National Merit. Skreen (talk) 15:20, 26 September 2010 (UTC)
The Special Barnstar
Thanks a lot for all your help! Really nice.'''Adam mugliston''' (talk) 18:06, 15 April 2011 (UTC)
The Random Acts of Kindness Barnstar
Thanks for your help! Steve (talk) 17:54, 31 January 2012 (UTC)
The Million Award
For your contributions to bring Ireland (estimated annual readership: 2,933,000) to Good Article status, I hereby present you the Million Award. Congratulations on this rare accomplishment, and thanks for all you do for Wikipedia’s readers. — Khazar2 (talk) 03:18, 28 August 2013 (UTC)
On behalf of the WikiProject Military history coordinators, I hereby award you the Wikistripe for your contribution of 1 FA, A-Class, Peer and/or GA review during the period July to September 2015. Well done! Peacemaker67 (crack… thump) 10:53, 5 October 2015 (UTC)
Keep track of upcoming reviews. Just copy and paste {{WPMILHIST Review alerts}} to your user space
The Special Barnstar
for a nice improvement to Ireland Yes, you deserve one. I wanted to give you an e-pint but I can’t remember how to do it. —Red King (talk) 17:51, 20 December 2019 (UTC)