A Mishnah may list a number of items and then follow with a general statement. For example in Shabbos 12 (4) the Mishnah says
הכותב שתי אותיות בהעלם אחד - חיב. כתב בדיו, בסם, בסקרא, בקומוס ובקנקנתום, ובכל דבר שהוא רושם
[If] one writes two letters under one spell of unawareness, he is liable. He is liable if he writes in ink, or Sikra [an orange earth], or resin, or Kankantom [a copper based paint], or any substance that leaves a mark.
On the general statement "ובכל דבר שהוא רושם or any substance that leaves a mark", the Gemoro asks "לאתויי מאי/what does this statement include" and answers that it includes the items mentioned in a Beraiso of Rabbi Chananiah. The Gemoro brings another Beraiso of Rabbi Chiyo to include further items.
When a mishnah makes a general statement following a list and the Gemoro asks what does this general statement include, does it include only the listed items in the answer or does it include anything like those items?