For me Playground is not even related to what is a Workspace. Therefore these two tools deserve different name in my opinion. 

Alexandre
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Alexandre Bergel  http://www.bergel.eu
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On Dec 8, 2014, at 4:36 PM, Andreas Wacknitz <a.wacknitz@gmx.de> wrote:

For me what you call GTPlayground is a better workspace than the original one. It will replace the workspace (in Pharo) for me
but it is still a workspace.