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Re: Mac HighDPI performance

 

Jon,

The v6 road map is here:

http://docs.kicad-pcb.org/doxygen/v6_road_map.html

I was planning on working on the schematic object but I wouldn't be
offended if you want to implement it.  If you do decide to work on this,
please keep me in the loop.  I have some things that I definitely want
implemented as part of this object most of which you have probably
already run into with your connectivity work.

Cheers,

Wayne


On 3/4/2018 3:07 PM, Jon Evans wrote:
> We should probably make some kind of road map if it doesn't exist
> already, concerning the path to GAL for eeschema and who will be doing
> what. For example, it might make sense to do the SCHEMATIC class
> refactoring you were talking about before or in parallel with parts of
> the porting effort.
> 
> I'm up for working on this too, as soon as my connectivity / bus stuff
> has landed. 
> 
> -Jon
> 
> On Sun, Mar 4, 2018, 14:46 Wayne Stambaugh <stambaughw@xxxxxxxxx
> <mailto:stambaughw@xxxxxxxxx>> wrote:
> 
>     I agree.  If it's not an easy straight forward fix, I would prefer to
>     spend our precious manpower resources on the GAL port as well.  I don't
>     know when in the v6 cycle any of this will happen but I'm guessing it
>     will happen fairly early.  Tom or Orson, do either of you have any idea
>     when this will happen?
> 
>     Wayne
> 
>     On 03/04/2018 02:40 PM, Jon Evans wrote:
>     > FWIW, I don't find the existing performance to be unusable, it's just
>     > not up to the standards of PcbNew/GAL.  I don't think it's worth any
>     > effort beyond easy fixes, we should put that energy into the GAL
>     port. 
>     >
>     > -Jon
>     >
>     > On Sun, Mar 4, 2018, 14:34 Bernhard Stegmaier
>     <stegmaier@xxxxxxxxxxxxx <mailto:stegmaier@xxxxxxxxxxxxx>
>     > <mailto:stegmaier@xxxxxxxxxxxxx <mailto:stegmaier@xxxxxxxxxxxxx>>>
>     wrote:
>     >
>     >     I would judge it wrt eeschema GAL conversion.
>     >     If that starts with v6, I don’t know if it is worth the effort.
>     >     If it is unsure when this will happen, it might be worth it.
>     >
>     >
>     >>     On 4. Mar 2018, at 20:30, Wayne Stambaugh
>     <stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>
>     >>     <mailto:stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>>>
>     wrote:
>     >>
>     >>     Ughh!  I don't have a good answer for this one.  My best guess is
>     >>     to fix
>     >>     the wx macos code first and see what performance issues are
>     left.  The
>     >>     problem with messing with any of this is that if you break
>     >>     something it
>     >>     will break all of the legacy canvas rendering not just the
>     schematic
>     >>     editor.  I would move extremely carefully here.  I would prefer
>     >>     that we
>     >>     don't go too crazy this late in the v5 release cycle.  If the
>     >>     performance is truly not usable on macos, then we may have no
>     choice.
>     >>
>     >>     On 03/04/2018 02:07 PM, Jeff Young wrote:
>     >>>     It turns out the fonts aren’t really the problem.
>     >>>
>     >>>     It starts with this gem in wxWidgets:
>     >>>
>     >>>   
>         voidwxWidgetCocoaImpl::ScrollRect(constwxRect*rect,intdx,intdy)
>     >>>
>     >>>        {
>     >>>
>     >>>        #if1
>     >>>
>     >>>        SetNeedsDisplay();
>     >>>
>     >>>        #else
>     >>>
>     >>>        //Weshoulddosomethinglikethis,butitwasn'tworkingin10.4.
>     >>>
>     >>>        if(GetNeedsDisplay())
>     >>>
>     >>>        {
>     >>>
>     >>>        SetNeedsDisplay() ;
>     >>>
>     >>>        }
>     >>>
>     >>>        NSRectr=wxToNSRect([m_osxViewsuperview],*rect);
>     >>>
>     >>>        NSSizeoffset=NSMakeSize((float)dx,(float)dy);
>     >>>
>     >>>        [m_osxViewscrollRect:rby:offset];
>     >>>
>     >>>        #endif
>     >>>
>     >>>        }
>     >>>
>     >>>
>     >>>     SetNeedsDisplay() with no rectangle argument invalidates the
>     >>>     entire window.
>     >>>
>     >>>     Even if you fix that (to scroll most of the window and only
>     >>>     invalidate
>     >>>     the newly-exposed parts), you run into this:
>     >>>
>     >>>   
>         voidwxWidgetCocoaImpl::drawRect(void*rect,WXWidgetslf,void*WXUNUSED(_cmd))
>     >>>
>     >>>        {
>     >>>
>     >>>        //preparingtheupdateregion
>     >>>
>     >>>        wxRegionupdateRgn;
>     >>>
>     >>>
>     >>>   
>         //sinceaddingmanyrectstoaregionisacostlyprocess,bydefaultusetheboundingrect
>     >>>
>     >>>        #if0
>     >>>
>     >>>        constNSRect*rects;
>     >>>
>     >>>        NSIntegercount;
>     >>>
>     >>>        [slfgetRectsBeingDrawn:&rectscount:&count];
>     >>>
>     >>>        for(inti=0;i<count;++i)
>     >>>
>     >>>        {
>     >>>
>     >>>        updateRgn.Union(wxFromNSRect(slf,rects[i]));
>     >>>
>     >>>        }
>     >>>
>     >>>        #else
>     >>>
>     >>>        updateRgn.Union(wxFromNSRect(slf,*(NSRect*)rect));
>     >>>
>     >>>        #endif
>     >>>
>     >>>
>     >>>     …which will /also/ cause the whole window to be repainted if
>     there’s
>     >>>     both an invalidated horizontal strip and a vertical one.
>     >>>
>     >>>     And the latter turns out to be pretty much guaranteed by this
>     >>>     one, which
>     >>>     batches repaints:
>     >>>
>     >>>        voidwxNonOwnedWindow::Update()
>     >>>
>     >>>        {
>     >>>
>     >>>        if(clock()-s_lastFlush>CLOCKS_PER_SEC/30)
>     >>>
>     >>>        {
>     >>>
>     >>>        s_lastFlush=clock();
>     >>>
>     >>>        m_nowpeer->Update();
>     >>>
>     >>>        }
>     >>>
>     >>>        }
>     >>>
>     >>>
>     >>>     But even Kicad isn’t blameless.  Once you fix all those there’s
>     >>>     still no
>     >>>     checking in SCH_SCREEN::Draw() to see if the individual draw
>     items
>     >>>     intersect the update region.  (Sure, the actually drawing is
>     >>>     clipped in
>     >>>     the end, but you still go through a /lot/ of code to get there.)
>     >>>
>     >>>     All of these are fixable, and we’ve already crossed the
>     Rubicon of
>     >>>     having our own OSX wxWidgets branch.  
>     >>>
>     >>>     But it’s still a reasonable amount of work, with a
>     non-trivial risk
>     >>>     profile.  Should I continue?
>     >>>
>     >>>     Cheers,
>     >>>     Jeff.
>     >>>
>     >>>
>     >>>
>     >>>>     On 4 Mar 2018, at 01:30, Bernhard Stegmaier
>     >>>>     <stegmaier@xxxxxxxxxxxxx <mailto:stegmaier@xxxxxxxxxxxxx>
>     <mailto:stegmaier@xxxxxxxxxxxxx <mailto:stegmaier@xxxxxxxxxxxxx>>
>     >>>>     <mailto:stegmaier@xxxxxxxxxxxxx
>     <mailto:stegmaier@xxxxxxxxxxxxx>>> wrote:
>     >>>>
>     >>>>     No.
>     >>>>
>     >>>>>     On 4. Mar 2018, at 01:51, Andrey Kuznetsov
>     <kandrey89@xxxxxxxxx <mailto:kandrey89@xxxxxxxxx>
>     >>>>>     <mailto:kandrey89@xxxxxxxxx <mailto:kandrey89@xxxxxxxxx>>
>     >>>>>     <mailto:kandrey89@xxxxxxxxx <mailto:kandrey89@xxxxxxxxx>>>
>     wrote:
>     >>>>>
>     >>>>>     Would it be an easy fix to change the text/font such that it
>     >>>>>     does not
>     >>>>>     affect performance so significantly on MacOS?
>     >>>>>
>     >>>>>     On Sat, Mar 3, 2018 at 5:20 AM, Wayne Stambaugh
>     >>>>>     <stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>
>     <mailto:stambaughw@xxxxxxxxx <mailto:stambaughw@xxxxxxxxx>>
>     >>>>>     <mailto:stambaughw@xxxxxxxxx
>     <mailto:stambaughw@xxxxxxxxx>>> wrote:
>     >>>>>
>     >>>>>        On 03/03/2018 07:33 AM, Jeff Young wrote:
>     >>>>>
>     >>>>>            Hi Andrey,
>     >>>>>
>     >>>>>            I did some profiling and I’d guess that the
>     difference in
>     >>>>>            eeschema and pcbnew-legacy performance is down to there
>     >>>>>     being
>     >>>>>            more text in the schema.  Since we use a stroke font,
>     >>>>>     there’s
>     >>>>>            a lot of stroke segments in each letter.
>     >>>>>
>     >>>>>            @Devs,
>     >>>>>
>     >>>>>            I understand why we use a stroke font on the PCB, but
>     >>>>>     there’s
>     >>>>>            not much reason in eeschema, is there?
>     >>>>>
>     >>>>>
>     >>>>>        This is possibly one of the things that I plan on
>     changing after
>     >>>>>        the new schematic file format is written.  The new file
>     format
>     >>>>>        will support font definitions so replacing the stroke
>     font in
>     >>>>>        Eeschema should be doable. Whether or not I have time
>     to make
>     >>>>>        this change remains to be seen.
>     >>>>>
>     >>>>>        Wayne
>     >>>>>
>     >>>>>
>     >>>>>            Cheers,
>     >>>>>            Jeff.
>     >>>>>
>     >>>>>
>     >>>>>                On 3 Mar 2018, at 08:18, Andrey Kuznetsov
>     >>>>>                <kandrey89@xxxxxxxxx <mailto:kandrey89@xxxxxxxxx>
>     >>>>>     <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>> <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>>
>     >>>>>                <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>
>     >>>>>                <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>>>> wrote:
>     >>>>>
>     >>>>>                The motherboard project is not very complex, I
>     would say
>     >>>>>                that performance should be tolerable UP to that
>     size
>     >>>>>                complexity, if we set the bar any lower,
>     usability will
>     >>>>>                suffer and people won't like KiCad because it's
>     sluggish
>     >>>>>                and interface lag is the worst kind of lag.
>     >>>>>                My project isn't finished and Chris' project is
>     >>>>>     available
>     >>>>>                now, is just the right complexity and has layout
>     >>>>>     that can
>     >>>>>                be used for testing as well as a schematic.
>     >>>>>
>     >>>>>                *LG 5K 27" display running 3200x1800 (the highest
>     >>>>>                resolution without making text blurry, using
>     this for
>     >>>>>                work every day, so it's extravagant, it's
>     practical)*
>     >>>>>
>     >>>>>                *Actions:* pan with middle mouse, zoom back and
>     forth.
>     >>>>>
>     >>>>>                *eeschema:*
>     >>>>>                Low Res - at least 2 times slower than would be
>     >>>>>                considered normal, I would have to guess ~400ms lag
>     >>>>>                Normal - 4-5x slower compared to low res mode
>     >>>>>     ~1700ms lag
>     >>>>>                Even in low res mode, and removing 75% of the
>     items from
>     >>>>>                Chris' schematic, the lag is still ~200-300ms,
>     that's
>     >>>>>                just not right. Additionally, I filed
>     >>>>>                https://bugs.launchpad.net/kicad/+bug/1753054
>     >>>>>                <https://bugs.launchpad.net/kicad/+bug/1753054>
>     because
>     >>>>>                the mouse zoom is screwed up in eeschema,
>     coupled with
>     >>>>>                the lag, it's unusable. Maybe the pan lag is
>     related to
>     >>>>>                the zoom, maybe there are multiple steps being
>     rendered
>     >>>>>                when it should just jump to where the mouse
>     ended up at,
>     >>>>>                I don't know.
>     >>>>>
>     >>>>>                *pcbnew - **Normal Resolution:*
>     >>>>>                Accelerated: No-AA, <50ms
>     >>>>>                Fallback: 500-1000ms for panning, 300-600ms for
>     zoom
>     >>>>>                Legacy: 1300-1700ms for panning, 600ms for zoom
>     >>>>>                Low Res mode: did not notice speed increase, except
>     >>>>>     maybe
>     >>>>>                Fallback was ~400ms faster.
>     >>>>>
>     >>>>>                I'm not saying halt the horses, certain modes are
>     >>>>>                obviously limited, ie Legacy and Fallback by
>     the nature
>     >>>>>                of the task presented, but eeschema is barely
>     displaying
>     >>>>>                10% of the content pcbnew is but lagging so
>     much worse!
>     >>>>>
>     >>>>>                Just thought I'd include rendering of the
>     Accelerated
>     >>>>>                Graphics (top to bottom: Supersampling 4x,
>     Subpixel AA
>     >>>>>                (Ultra Quality), No AA)
>     >>>>>                All 3 modes are responsive, probably <50-100ms
>     lag, I'd
>     >>>>>                consider this performance great, considering
>     the amount
>     >>>>>                of elements on screen.
>     >>>>>                <image.png>
>     >>>>>
>     >>>>>                How long should it take to delete this many
>     selected
>     >>>>>                elements in pcbnew?
>     >>>>>                Answer: about 50x too long! I think it was like
>     3mins,
>     >>>>>                perhaps ESC key should be available to press
>     anytime to
>     >>>>>                undo the delete action and restore to
>     pre-delete screen
>     >>>>>                when accidental actions are triggered that take
>     forever
>     >>>>>                to complete?
>     >>>>>                <image.png>
>     >>>>>
>     >>>>>                On Fri, Mar 2, 2018 at 9:53 AM, Bernhard Stegmaier
>     >>>>>                <stegmaier@xxxxxxxxxxxxx
>     <mailto:stegmaier@xxxxxxxxxxxxx>
>     >>>>>     <mailto:stegmaier@xxxxxxxxxxxxx
>     <mailto:stegmaier@xxxxxxxxxxxxx>> <mailto:stegmaier@xxxxxxxxxxxxx
>     <mailto:stegmaier@xxxxxxxxxxxxx>>
>     >>>>>                <mailto:stegmaier@xxxxxxxxxxxxx
>     <mailto:stegmaier@xxxxxxxxxxxxx>
>     >>>>>                <mailto:stegmaier@xxxxxxxxxxxxx
>     <mailto:stegmaier@xxxxxxxxxxxxx>>>> wrote:
>     >>>>>
>     >>>>>                    Hi,
>     >>>>>
>     >>>>>                    to be honest, I don’t really know what this is
>     >>>>>     about.
>     >>>>>
>     >>>>>                    @Andrey:
>     >>>>>                    You looked for a very complex (foreign) project
>     >>>>>                (Chris mainboard?)
>     >>>>>                    to prove that eeschema is slow on Mac?
>     >>>>>                    Well, we know that and we told you already some
>     >>>>>                weeks/months ago
>     >>>>>                    why it is like it is (if memory serves me
>     right).
>     >>>>>
>     >>>>>                    Or, do you have an own project that is so
>     >>>>>                ridiculously slow, that
>     >>>>>                    you can’t work with it?
>     >>>>>                    If so, please provide it so that we can
>     analyse why
>     >>>>>                this specific
>     >>>>>                    project behaves like that.
>     >>>>>                    If you can’t or don’t want to provide it we
>     could
>     >>>>>                tell you how to
>     >>>>>                    do some performance measurements so that we
>     >>>>>     might see
>     >>>>>                something.
>     >>>>>
>     >>>>>                    Obviously, there are a number of Mac users
>     here and
>     >>>>>                also over at
>     >>>>>                    the KiCad forum who might also be happy to get
>     >>>>>     some more
>     >>>>>                    performance here and there, but who are in
>     general
>     >>>>>                reasonably able
>     >>>>>                    to work on their projects (including
>     myself, on a
>     >>>>>                2012 Retina
>     >>>>>                    MacBook with only an i5).
>     >>>>>
>     >>>>>
>     >>>>>                    Regards,
>     >>>>>                    Bernhard
>     >>>>>
>     >>>>>                    > On 2. Mar 2018, at 17:59, Andy Peters
>     >>>>>                <devel@xxxxxxxxx <mailto:devel@xxxxxxxxx>
>     >>>>>     <mailto:devel@xxxxxxxxx
>     <mailto:devel@xxxxxxxxx>> <mailto:devel@xxxxxxxxx
>     <mailto:devel@xxxxxxxxx>>
>     >>>>>                   
>     >>>>>     <mailto:devel@xxxxxxxxx
>     <mailto:devel@xxxxxxxxx> <mailto:devel@xxxxxxxxx
>     <mailto:devel@xxxxxxxxx>>>> wrote:
>     >>>>>                    >
>     >>>>>                    >
>     >>>>>                    >
>     >>>>>                    >> On Mar 1, 2018, at 8:53 PM, Seth Hillbrand
>     >>>>>                    <seth.hillbrand@xxxxxxxxx
>     <mailto:seth.hillbrand@xxxxxxxxx>
>     >>>>>     <mailto:seth.hillbrand@xxxxxxxxx
>     <mailto:seth.hillbrand@xxxxxxxxx>>
>     >>>>>                <mailto:seth.hillbrand@xxxxxxxxx
>     <mailto:seth.hillbrand@xxxxxxxxx>>
>     >>>>>                <mailto:seth.hillbrand@xxxxxxxxx
>     <mailto:seth.hillbrand@xxxxxxxxx>
>     >>>>>                <mailto:seth.hillbrand@xxxxxxxxx
>     <mailto:seth.hillbrand@xxxxxxxxx>>>> wrote:
>     >>>>>                    >>
>     >>>>>                    >> Andrey-
>     >>>>>                    >>
>     >>>>>                    >> I'm moving this to a new thread so that
>     we don't
>     >>>>>                conflate the
>     >>>>>                    OpenMP discussion with this.
>     >>>>>                    >>
>     >>>>>                    >> Can you test running Kicad with the
>     "Open in Low
>     >>>>>                Resolution"
>     >>>>>                    mode enabled?  You can activate this by
>     choosing
>     >>>>>     "Get
>     >>>>>                Info" on the
>     >>>>>                    main KiCad application and checking the
>     option that
>     >>>>>                says "Open in
>     >>>>>                    Low Resolution".  You may need to do the same
>     >>>>>     for the
>     >>>>>                other
>     >>>>>                    applications (Eeschema, pcbnew, etc) as well.
>     >>>>>                    >
>     >>>>>                    > testing on my 2017” touch-bar MBP …
>     >>>>>                    >
>     >>>>>                    > Good g-d, low-res mode looks fuzzy and weird!
>     >>>>>                    >
>     >>>>>                    > I don’t notice any specific differences in
>     >>>>>     EESchema
>     >>>>>                performance.
>     >>>>>                    Maybe my schematic isn’t busy enough? I’m a
>     fan of
>     >>>>>                using more
>     >>>>>                    smaller sheets with less info on each than
>     one big
>     >>>>>                sheet with
>     >>>>>                    everything.
>     >>>>>                    >
>     >>>>>                    > I know, anecdote is not evidence.
>     >>>>>                    >
>     >>>>>                    > -a
>     >>>>>                    >
>     >>>>>                    >
>     >>>>>                    >>
>     >>>>>                    >> -Seth
>     >>>>>                    >>
>     >>>>>                    >> ​​2018-03-01 18:09 GMT-08:00 Andrey
>     Kuznetsov
>     >>>>>                    <kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>
>     >>>>>     <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>> <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>>
>     >>>>>                <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx> <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>>>>:
>     >>>>>                    >> Hi,
>     >>>>>                    >>
>     >>>>>                    >> So for now I've had a chance to test the
>     >>>>>                motherboard project on
>     >>>>>                    my Retina macbook display.
>     >>>>>                    >> eeschema: horrible zoom, feels like
>     elastic band
>     >>>>>                zoom and I
>     >>>>>                    have all scroll wheel accelerations and similar
>     >>>>>                disabled, zoom
>     >>>>>                    response is super laggy, cannot work like
>     this, will
>     >>>>>                need to make
>     >>>>>                    schematics on windows.
>     >>>>>                    >> pcbnew by order of slowness:
>     >>>>>                    >> legacy - pretty slow, zoom lag is major,
>     boo boo
>     >>>>>                    >> modern (fallback) - decent, but the lag
>     can be
>     >>>>>                felt, zoom lag
>     >>>>>                    is minor
>     >>>>>                    >> modern (accelerated) - almost cannot
>     feel the
>     >>>>>     lag,
>     >>>>>                very nice,
>     >>>>>                    nice zoom responsiveness
>     >>>>>                    >>
>     >>>>>                    >> I'll report tomorrow on 5K LG display.
>     >>>>>                    >> ​
>     >>>>>                    >
>     >>>>>                    >
>     >>>>>                    >
>     _______________________________________________
>     >>>>>                    > Mailing list:
>     >>>>>                https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>
>     >>>>>                    <https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>>
>     >>>>>                    > Post to   
>     >>>>>      : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>                <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>                   
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>>                <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>>
>     >>>>>                    > Unsubscribe :
>     >>>>>                https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>
>     >>>>>                    <https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>>
>     >>>>>                    > More help 
>      : https://help.launchpad.net/ListHelp
>     >>>>>                <https://help.launchpad.net/ListHelp>
>     >>>>>                    <https://help.launchpad.net/ListHelp
>     >>>>>                <https://help.launchpad.net/ListHelp>>
>     >>>>>
>     >>>>>
>     >>>>>                    _______________________________________________
>     >>>>>                    Mailing
>     >>>>>     list: https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>
>     >>>>>                    <https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>>
>     >>>>>                    Post to   
>     >>>>>      : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>                <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>                   
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>>                <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>>
>     >>>>>                    Unsubscribe
>     >>>>>     : https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>
>     >>>>>                    <https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>>
>     >>>>>                    More help 
>      : https://help.launchpad.net/ListHelp
>     >>>>>                <https://help.launchpad.net/ListHelp>
>     >>>>>                    <https://help.launchpad.net/ListHelp
>     >>>>>                <https://help.launchpad.net/ListHelp>>
>     >>>>>
>     >>>>>
>     >>>>>
>     >>>>>
>     >>>>>                -- 
>     >>>>>                Remember The Past, Live The Present, Change The
>     Future
>     >>>>>                Those who look only to the past or the present are
>     >>>>>                certain to miss the future [JFK]
>     >>>>>
>     >>>>>                kandrey89@xxxxxxxxx <mailto:kandrey89@xxxxxxxxx>
>     >>>>>     <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>> <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>>
>     >>>>>                <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx> <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>>>
>     >>>>>                Live Long and Prosper,
>     >>>>>                Andrey
>     >>>>>                _______________________________________________
>     >>>>>                Mailing
>     list: https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>
>     >>>>>                Post to
>         : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>                <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>                <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>>                <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>>
>     >>>>>                Unsubscribe
>     : https://launchpad.net/~kicad-developers
>     >>>>>                <https://launchpad.net/~kicad-developers>
>     >>>>>                More help   : https://help.launchpad.net/ListHelp
>     >>>>>                <https://help.launchpad.net/ListHelp>
>     >>>>>
>     >>>>>
>     >>>>>
>     >>>>>
>     >>>>>            _______________________________________________
>     >>>>>            Mailing list: https://launchpad.net/~kicad-developers
>     >>>>>            <https://launchpad.net/~kicad-developers>
>     >>>>>            Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>            <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>            Unsubscribe : https://launchpad.net/~kicad-developers
>     >>>>>            <https://launchpad.net/~kicad-developers>
>     >>>>>            More help   : https://help.launchpad.net/ListHelp
>     >>>>>            <https://help.launchpad.net/ListHelp>
>     >>>>>
>     >>>>>
>     >>>>>        _______________________________________________
>     >>>>>        Mailing list: https://launchpad.net/~kicad-developers
>     >>>>>        <https://launchpad.net/~kicad-developers>
>     >>>>>        Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>        <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>        Unsubscribe : https://launchpad.net/~kicad-developers
>     >>>>>        <https://launchpad.net/~kicad-developers>
>     >>>>>        More help   : https://help.launchpad.net/ListHelp
>     >>>>>        <https://help.launchpad.net/ListHelp>
>     >>>>>
>     >>>>>
>     >>>>>
>     >>>>>
>     >>>>>     -- 
>     >>>>>     Remember The Past, Live The Present, Change The Future
>     >>>>>     Those who look only to the past or the present are certain
>     to miss
>     >>>>>     the future [JFK]
>     >>>>>
>     >>>>>     kandrey89@xxxxxxxxx <mailto:kandrey89@xxxxxxxxx>
>     >>>>>     <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>> <mailto:kandrey89@xxxxxxxxx
>     <mailto:kandrey89@xxxxxxxxx>>
>     >>>>>     Live Long and Prosper,
>     >>>>>     Andrey
>     >>>>>     _______________________________________________
>     >>>>>     Mailing list: https://launchpad.net/~kicad-developers
>     >>>>>     Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>>     Unsubscribe : https://launchpad.net/~kicad-developers
>     >>>>>     More help   : https://help.launchpad.net/ListHelp
>     >>>>
>     >>>>     _______________________________________________
>     >>>>     Mailing list: https://launchpad.net/~kicad-developers
>     >>>>     Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>>     Unsubscribe : https://launchpad.net/~kicad-developers
>     >>>>     More help   : https://help.launchpad.net/ListHelp
>     >>>
>     >>>
>     >>>
>     >>>     _______________________________________________
>     >>>     Mailing list: https://launchpad.net/~kicad-developers
>     >>>     Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>>     Unsubscribe : https://launchpad.net/~kicad-developers
>     >>>     More help   : https://help.launchpad.net/ListHelp
>     >>>
>     >>
>     >>     _______________________________________________
>     >>     Mailing list: https://launchpad.net/~kicad-developers
>     >>     Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >>     Unsubscribe : https://launchpad.net/~kicad-developers
>     >>     More help   : https://help.launchpad.net/ListHelp
>     >
>     >     _______________________________________________
>     >     Mailing list: https://launchpad.net/~kicad-developers
>     >     Post to     : kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>
>     >     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx
>     <mailto:kicad-developers@xxxxxxxxxxxxxxxxxxx>>
>     >     Unsubscribe : https://launchpad.net/~kicad-developers
>     >     More help   : https://help.launchpad.net/ListHelp
>     >
> 


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References