Currently only methods support pragmas in Pharo. Therefore we already had a discussion about "Pragmas/Annotations for classes". See http://forum.world.st/Pragmas-Annotations-for-classes-td2282310.html To summarize: it would be helpfull to have them (and with them also get rid of workarounds like specific conventions, abusing class comments, etc.). At that time it was not possible to add an iVar to Class, but this issue was solved already: https://pharo.fogbugz.com/f/cases/11596/Adding-an-iVar-to-class-Class-gives-... Must admit I havent tested in latest Pharo 4 if this is still working. After we now have slots and other nice extensions in Pharo again my basic question: what about having "annotations" for a class in Pharo. I think we will find enough use cases on annotating a class with someting useful. Even a category or a comment could just be an annotation. Is there interest to have such a change for Pharo4 or are there reasons to abandon such an idea. I guess such a change could not be provided with a simple slice. Any thoughts/decisions? Thanks T.