Rather OT - what is this icon?

[Timothy Murphy]

Daniel Vrátil wrote:

>> What is the syringe-like icon which appears on all plasma pages
>> in the "title bar" at the top of the page, second place on the left?
>> And what exactly is its function?
>> When I left click on it, it turns into a small white disk
>> with a dot in the centre.
>> If I click on it again, it turns back to the syringe icon.
>> When I right click on it, nothing happens.
> 
> It's not a syringe, but a pin :-) When you click it, it pins the window to
> all virtual desktops.

Thanks, I see now that it does look like what I know as a mapping pin.
And I was trying to work out what was in the syringe!

>> More generally, is there a page online somewhere
>> that outlines the anatomy of a plasma page?
> 
> There's https://userbase.kde.org/KWin but I'm not sure how much up-to-date
> it is.
> 

Thanks again, that is quite interesting.
But as you suggested it seems rather out-of-date.
I don't see anything remotely like
Workspace Appearance -> Window Decorations -> Configure Buttons
(which would presumably have told me what the different buttons mean)
in my System Settings.
The nearest I can get is
Appearance -> Application Style -> Window Decorations
where there is a screenshot with Configure Buttons in it,
but no indication how to get there in real life.


-- 
Timothy Murphy  
gayleard /at/ eircom.net
School of Mathematics, Trinity College, Dublin