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A participant didn't know how to get to error description indicated by red underlining. He hovered mouse over the underline and expected tooltip with description. Other participants were not sure what gray underlining indicated. If they hovered mouse above the underline it didn't explain it. Recommendation: Provide error descriptions and descriptions of gray underlines in tooltips.
And tooltips for warnings too.
*** Issue 111109 has been marked as a duplicate of this issue. ***
I have added tooltips to the "unused" colorings (see below). The tooltips for errors/warnings were already added as fix for issue #88629. Checking in UnusedTooltipResolver.java; /cvs/java/editor/src/org/netbeans/modules/java/editor/semantic/UnusedTooltipResolver.java,v <-- UnusedTooltipResolver.java initial revision: 1.1 done Checking in ColoringManager.java; /cvs/java/editor/src/org/netbeans/modules/java/editor/semantic/ColoringManager.java,v <-- ColoringManager.java new revision: 1.8; previous revision: 1.7 done Checking in Bundle.properties; /cvs/java/editor/src/org/netbeans/modules/java/editor/semantic/Bundle.properties,v <-- Bundle.properties new revision: 1.3; previous revision: 1.2 done