Reference for Menachot 62:10

מיתיבי אמר רשב"א ר"מ היה כותבה על דוכסוסטוס כמין דף

Some say, at the end of the line', for it is writ As the heaven is high above the earth.<span class="x" onmousemove="('comment',' Ps. CIII, 11. The penultimate line in the mezuzah ends with 'the heaven', so that if 'above the earth' were written at the end of the last line it would be seen that 'the heaven' is directly above 'the earth', in conformity with the expression in Psalms.');">¹⁰</span> 'Others say, at the beginning', as the heaven is far from the earth.<span class="x" onmousemove="('comment',' And the furthest distance between these words is obtained by placing 'the heaven' at the end of the penultimate line and 'the earth' at the beginning of the last line.');">¹¹</span> R'Helbo said, I have seen R'Huna rolling up the mezuzah beginning at 'one' and finishing at 'hear';<span class="x" onmousemove="('comment',' The opening line of the mezuzah is: Hear, O Israel: the Lord our God, the Lord is One (Deut. VI, 4) : and as Heb. is written from right to left, it is clear therefore that R. Huna used to roll up the mezuzah beginning at the left with the word 'one' and finishing at the right with the word 'hear'.');">¹²</span> moreover, he left [the space between] the sections closed.<span class="x" onmousemove="('comment',' I.e., he began the second passage in the mezuzah on the same line as that on which the first passage ended, allowing only a short blank space between the two passages. xuyxuxfus');">¹³</span> An objection was raised: R'Simeon B'Eleazar said, R'Meir used to write [the mezuzah] on duksustus,<span class="x" onmousemove="('comment',' . In making parchment it was the usual practice to split the thickness of the skin and divide it into two sheets, each sheet being treated and prepared. The parchment made from the inner sheet, i.e., the side next to the flesh of the animal, was regarded as the best quality (this ;ke xuyxuxfus was known as , and that made from the outer sheet, i.e., the side next to the hair, was an inferior quality (this was known as) .');">¹⁴</span> in the form of a column,

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