== Why is this an issue? ``++COPY ... SUPPRESS++`` suppresses the inclusion of the copybook contents from the source listing, making it very difficult to gain a complete understanding of what's happening in the code. This could hinder both maintenance and debugging. === Noncompliant code example [source,cobol] ---- COPY XX001234 SUPPRESS. <* Noncompliant ---- === Compliant solution [source,cobol] ---- COPY XX001234. ---- ifdef::env-github,rspecator-view[] ''' == Implementation Specification (visible only on this page) === Message Don't "SUPPRESS" inclusion of this library in the code listing. === Highlighting ``++SUPPRESS++`` endif::env-github,rspecator-view[]