I added Nodeclipse "Enide Studio 2014" plugins to the same Workspace as my Java projects (I usually don't do that).
My Node Perspective worked great, I created a new Node project and it all worked great.
Then I went back to my Java Perspective and noticed that all of my Java projects had spell check enabled - the annotations "sp" were on the left margin for mundane names for variables all over the place.
I made sure spell check was disabled globally (Window - Preferences - General - Editors - Text Editors - Spelling). Not enabled. But still there in all my Java projects. How to turn (back) off without uninstalling Nodeclipse?
First, you are adding plugins into Eclipse instance not workspace.
You can open workspace with different Eclipses,
and use the same Eclipse to open several workspaces in the same time.
Nodeclipse "Enide Studio 2014" comes with JDT-spelling, that checks for words inside Java names using conventions , see #30
To disable or configure go to
Window -> Preferences -> Java -> JDT Spelling
(or just search for "spell" in Preferences Dialog)