1)
What is the meaning of "El Mul Panav"?
1.
Rashi: It means that the settings for the stones should not face the Me'il but outwards. The side that is not seen is called 'Panim'. 1
1
Hadar Zekenim: It seems that Rashi maintains that the settings were recessed only a little into the thickness of the Eifod, and that [the cavity] faced the outside.