Hi Uwe and Trevor, Thanks for these two very clever scripts. Work all them but I prefer Trevor's approach because it is sufficient unto itself without preparation. However, the 2 scripts have the same two flaws: 1 / They do not calculate themselves the zoom percent. Unfortunate, though his calculation is not very complicated: given an entire page (Height H1 // known) appears with an X rate (// known), two pages (H1 = 2 H2 // known) + the gap (G // known = 12.7 mm) between pasteboards will be displayed with a rate Y as calculated: Y = H1 x X ÷ (H2 + G). 2 / As, in any case, the rate Y seems to be rounded, we see in the scrolling in one direction or the other, a growing gap in the centering of the two spreads. This problem can be solved as follows by three scripts: Script 0: the script as written. Script 1: It scrolls to the 2 new spreads towards the end of the document ["Go to the next spread"] and then Script 0 is launched again. Script 2: It scrolls to the 2 new spreads towards the beginning of the document ["Go to the previous spread"] and then Script 0 is launched again. Actually, I do the steps 1 and 2 with two little QuicKeys Shortcuts: After I associate an ID keyboard shortcut to your scripts (Uwe/Trevor), I create 2 shortcuts with QK: 1/ "Go to the next spread" + launch the script 0 2/ "Go to the previous spread" + launch the script 0 The result is very cool! One last point: I have a bug in the script on Trevor, not sure it is due to a bug in his script!
... View more