A classpath variable can be added to a project’s class path. It can be used to define location of a JAR file that is not the part of workspace. Non modifiable class path variables are set internally like JRE_LIB, JRE_SRC, JRE_JRCROOT. (more…)
the (more...)-Link doesn't seem to work anymore, but in fact I'm interested to read more. Both Opera and Firefox present me an empty page after jt.org/blog/
Eclipse - Classpath variables
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