[1] cf. alpha 4434. For a meaning similar to this LSJ cites Judges 10.22 LXX, but far more frequently (including in the quotation provided, which seems to refer to the drawing aside of a curtain rigged up on, or in front of, a proscenium) it properly refers to a platform in front of the scene structure.
[2] Ascribed to Polybius (fr. 212 Büttner-Wobst). Theodoridis in his Photius edition (vol.II p.XCI) argues -- adducing the parallel of Polybius 15.17.6 -- that its opening participle, transmitted as parelkome/nh, should actually be parelome/nh 'removing'; cf. also for this Menander, Dyscolus 803-804.