It&#x27;s a pity that there isn&#x27;t a ubiquitous way to communicate to programmers features that are at risk of being removed or at risk of causing incompatibility with other software. I don&#x27;t mean some document you have to look up, I mean if you use an at-risk feature, you&#x27;re given a warning many years before it actually gets removed. Programmers often discover features of APIs by trial and error, not just by reading the manual.<p>At-risk features should include things that may not get removed but aren&#x27;t supported by every platform - like .Net classes that aren&#x27;t present in Wine. Sure, MS asks you not to target non-Windows platforms but in reality, users will still try to do it.