On Tue, 16 Jan 2018 17:52:17 +0000 (UTC), Kiwi User
 declaimed the following:

>The URL posted by Richard says that Chromium has a master process
>handling the main screen and supervisory functions plus one process per
>tab.
>
 Which post I saw after submitting my evaluation 

>Yesterday I found description of Node-red internals:
>https://en.wikipedia.org/wiki/Node.js
>

 Possibly of more interest https://nodered.org/docs/hardware/raspberrypi

"""
Note: the default browser included in Raspbian, Epiphany, has some quirks
that mean certain keyboard short-cuts do not work within the Node-RED
editor. We strongly recommend installing the Firefox-ESR browser instead:

    sudo apt-get install firefox-esr

More recent build include Chromium - which also works fine but can be
rather slow on a Pi1 or Zero.
"""

Apparently it is "rather slow" on an RPI-3 too 

 The OP might want to give Firefox on the RPI a try (meaning a third
experimental run with TOP and browser on the unit).
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 Wulfraed                 Dennis Lee Bieber         AF6VN
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