If it is the minimo comune multiplo (denominatore), the Least Common Multiple is the smallest number that two or more numbers will divide into evenly.
I have never seen that theory applied to a grid, tho, interesting, please post your findings.

true but how is that applied to a grid on the page???

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arjun

Hy Arjun, first of all its really good to hear Patel Sir's name here, he is really a great mentor, fortunately i got a chance to work on some projects with him.

Well LCM grid is a technique to find out no. of columns and their optimum width suitable for a particular page size, so you get the consistent divisons and there wont be any extra space left after drawing columns.

The most commonly used LCM is 12, because its a divisible for both even and odd, so you get a flexibility of working with 2,3 and 4 column chunks.

Previously designers had to use a formula for manually calculating the column widths accordingly to desired LCM, but now with InDesign you can directly define it easily.

See the image, above its a 12 column LCM grid, might make clear.

I see what you mean with "LCM grid," thank you, Nitin, that makes sense, it is also intuitive.

Ah!

Thank you so much for that Nitin! Thats cleared up something thats kept me from sleeping for quite a few nights!

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arjun

I am glad that it helped you. Also see the link down, that will make everything clear.

www.subtraction.com/pics/0703/grids_are_good.pdf

Nitin:
What a great resource!

Heh, this reminds me of a diagram I once made for a client to explain what I meant by "divine proportion" :)