https://forum.world.st/Another-Halo-Question-complete-newbie-tp3019925p3025211.html
> On Sat, Oct 30, 2010 at 5:13 AM, Stéphane Ducasse
> <
[hidden email]> wrote:
>>
>> On Oct 30, 2010, at 3:04 AM, James Ashley wrote:
>>
>>>
>>> I've read the documents about getting halos activated in the first
>>> place. I'm on linux, where alt-shift middle-click (I'm still trying to
>>> get the button colors down) generally works.
>>>
>>> In the lights out sample, it doesn't. I can ctrl-shift "left" click,
>>> get a giant menu, and select "Add Halo." That puts a halo around the
>>> individual cell. If I close it, it disappears and shows a blue
>>> background (which I'm starting to suspect is a default for
>>> morphics...is that close?).
>>
>> Strange I do not get it.
>> normally the halso should be displayed when you click and option shift (but I'm
>> on mac)
>
> I'm starting to think this may be some sort of bug with the linux
> version. I get the impression that the Squeak developers were heavily
> tilted toward linux.
not really since we were a lot of squeakers moving to pharo and on mac.