# [ref_impl_eiffel] [948] Remove all cases of the obsolete "is" keyword that have crept back into the source code. **Category:** [Reference Implementation: Eiffel (archive)](https://discourse.openehr.org/c/reference-implementation-eiffel-archive/161) **Created:** 2010-06-16 08:54 UTC **Views:** 7 **Replies:** 0 **URL:** https://discourse.openehr.org/t/ref-impl-eiffel-948-remove-all-cases-of-the-obsolete-is-keyword-that-have-crept-back-into-the-source-code/13422 --- ## Post #1 by @svn1 Revision: 948 Author: peter\.gummer Log Message: --- **Canonical:** https://discourse.openehr.org/t/ref-impl-eiffel-948-remove-all-cases-of-the-obsolete-is-keyword-that-have-crept-back-into-the-source-code/13422 **Original content:** https://discourse.openehr.org/t/ref-impl-eiffel-948-remove-all-cases-of-the-obsolete-is-keyword-that-have-crept-back-into-the-source-code/13422