The form Onpas mentioned above contains both the pa suffix and the s suffix, and the latter might be used to soften the statement. Originally, the s suffix is a shortened form of the personal pronoun sinä (you), or rather its colloquial form sä. This origin can still be seen in requests like Tules tänne, which might be seen as based on Tule sä tänne. In fact, the s suffix or the pa suffix or their combination pas might often be regarded as more or less obligatory for normal politeness, somewhat like “please” is used in English. A mere Tule tänne might sound like a direct order.