ECLIPSE resolves path aliases defined in an included file globally, i.e.
/
|> include.inc
|-- PATHS 'alias' 'path/to/dir'
|> main.data
|-- INCLUDE 'include.inc' /
| [...]
|-- INCLUDE '$alias/file.inc' /
will resolve as 'path/to/dir/file.inc'. This behaviour is now adopted by
opm-parser.