Vise for ABAP helps you refactoring legacy ABAP code. ZCL_VISE=>GRIP( ... ) stores a field in the database and ensures, when called a second time after a refactoring, that nothing has changed. If the field has changed, an exception will be raised telling you that something went wrong... http://scn.sap.com/community/abap/blog/2013/06/21/vise-for-abap
Installation via abapGit. Legacy SAPLINK artefacts are no longer updated.