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Link verified by Sergei Chevtsov, 06-11-2007
http://help.eclipse.org/help32help33/index.jsp?topic=/org.eclipse.pde.doc.user/guide/tasks/pde_source_generation.htm
A source feature is useful for delivering source code to a developer via Eclipse infrastructure.
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Answered by Sergei Chevtsov, 06-08-2007
http://help.eclipse.org/help32help33/index.jsp?topic=/org.eclipse.jdt.doc.isv/guide/jdt_api_compile.htm
Eclipse uses its own Java compiler that is more flexible than Sun's.
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Link verified by Sergei Chevtsov, 08-16-2007
http://help.eclipse.org/help32help33/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/bundle_manifest.html
Your MANIFEST.MF file will NOT contain the element "Eclipse-LazyStart: true", and the plugin will be activated when the Eclipse platform starts.
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1. Check out the project "external" from our CVS.
2. Copy your JAR file and, if applicable, the corresponding ZIP file with source code to the top directory of "external".
Some guidelines about naming source ZIP files: http://help.eclipse.org/help32help33/index.jsp?topic=/org.eclipse.pde.doc.user/guide/tools/preference_pages/source_code_locations.htm
3. Open the MANIFEST.MF file from the META-INF directory of "external".
4. Choose the RUNTIME tab at the bottom of your editor.
5. Click on ADD... in the "Classpath" section and select the new JAR file.
6. Click on ADD.. in the "Exported Packages" section and select all desired packages.
7. Optional: in the build path configuration dialog of the project, attach source from the ZIP file and specify Javadoc location of the library
8. Commit "external" to CVS.
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Answered by Sergei Chevtsov, 06-13-2007
http://help.eclipse.org/help32help33/nftopic/org.eclipse.platform.doc.isv/reference/api/org/eclipse/ui/ISaveablePart.html
Your view must implement ISaveablePart.
Note #1: An editor already implements ISaveablePart.
Note #2: I am not saying that this always is the correct way to save data from a view.
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Answered by Sergei Chevtsov, 06-14-2007
Basically, use FileLocator .
Similar methods in other classes are deprecated and call FileLocator anyway.
To get a Bundle instance associated with the desired plugin, use ((Plugin)myPlugin).getBundle().
If you can't access the instance of the desired Plugin, then (in addition to yelling at the plugin developer 
) use Platform.getBundle(symbolicName) where "symbolicName" is specified in the plugin's MANIFEST.MF file.
Finally, use new Path(myPath), where "myPath" is relative to the plugin's top directory, to get an instance of IPath.
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Answered by Sergei Chevtsov, 07-25-2007
Use ErrorDialog, e.g.:
ErrorDialog.openError(shell, title, null, new Status(IStatus.ERROR, pluginId, IStatus.OK, localizedMessage, exception));
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Answered by Sergei Chevtsov, 09-06-2007
http://help.eclipse.org/help32help33/index.jsp?topic=/org.eclipse.pde.doc.user/guide/tools/editors/manifest_editor/build.htm
Pay special attention to where your class files will land.
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Some of the most common URLs are:
JDK => http://java.sun.com/j2se/1.5.0/docs/api/
Eclipse => http://help.eclipse.org/help32help33/nftopic/org.eclipse.platform.doc.isv/reference/api/
SEAL plugin => http://www.slac.stanford.edu/grp/lcls/controls/docs/physics/sealPLUGIN_NAME/javadoc/
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Answered by Sergei Chevtsov, 06-13-2007
http://help.eclipse.org/help32help33/index.jsp?topic=/org.eclipse.platform.doc.isv/guide/swt_threading.htm
You can only access SWT widgets from a UI thread.
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Link verified by Sergei Chevtsov, 07-11-2007
http://help.eclipse.org/help32help33/index.jsp?topic=/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html
Some of the most useful options are: clean, console, debug (note: it actually enables tracing only), nl, noSplash, password, vm, vmArgs.
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Link verified by Sergei Chevtsov, 06-11-2007
http://help.eclipse.org/help32help33/index.jsp?topic=/org.eclipse.pde.doc.user/guide/tasks/pde_feature_generating_ant.htm
It uses build.properties from your plugin's top directory.
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