The Oracle Solaris OS supports numerous standards and specifications. The current Oracle Solaris release is certified and registered with the UNIX brand conforming to the Single UNIX Specification standard that is managed by The Open Group industry consortium. For information about the current Product Standard, see https://publications.opengroup.org/certifications/unix.
Software developers writing applications in the Oracle Solaris environment should be aware of these standards. Developers can declare that an application complies with a specific standard by using specific compiler options. The standards that are supported by Oracle Solaris and their related compiler options are outlined in the standards(7) man page. Or, you can use the man standards command and check the Description section of the command output.