1)
What is "Masach"?
1.
Rashi: It is a curtain.
2)
What is "Al Pnei ha'Be'er"?
1.
Radak based on Targum Yonasan: It is like Al Pi ha'Be'er. This is one of three places in which it says Pnei and it means Pi.
3)
What are "ha'Rifos"?
1.
Rashi: It is crushed wheat, like "b'Soch ha'Rifos" (Mishlei 27:22). Radak - and "Amudei Shamayim Yerofafu 1 " (Iyov 26:11).
1
Rashi (Bereishis 1:6, citing Yalkut Shimoni 3) explains that it was soft! What is the source to say that it was crushed? (PF)