Because "0017.rar" is a generic name, it is also a common format for or phishing attachments. If you encountered this file in an unsolicited email or on a suspicious website, do not open it. Always scan archives with a tool like VirusTotal before extracting them. IR library not working with ATtiny chips - Arduino Forum
In the hardware development community, is a known archive containing core files for ATtiny microcontrollers. 0017.rar
In the "modscene" (a subculture dedicated to tracker music), the name appears as . Because "0017