Here is the translation of the text you provided:

"And behold, the Gra (in the Shulchan Aruch) brought a source for the ruling of the Ramah from the Talmud, that if one ate an olive size of Matzah while reclining, he fulfilled his obligation, implying that without reclining he did not fulfill his obligation. And in our Mishna it is found that even the poorest person in Israel should not eat until reclining, indicating that it applies to the entire meal, and ideally. Based on this, one should consider the opinion of the Ramah, who holds like the Rosh, that reclining relates to the mitzvah of Matzah itself, indeed, he precisely interprets the Mishna, that ideally one should recline throughout the entire meal."