Where's top margin actually measured from?

I'm typesetting a book using memoir class as follow.

1. Final book size: 14 x 21 cm
2. Two side
4. Margin: inside=0.75in, others=0.5in

The header/page number section is just too close to the top page edge. There should be enough space between them.

My questions:

1. Where's top margin actually measured from? from most top paragraph to the top edge of page, or from header to the top edge of page.
2. How to properly set the margin (inside=0.75in, others=0.5in) and page size (14x21 cm).

Thanks. :)

\documentclass[12pt,twoside]{memoir}
\usepackage[paperwidth=140mm, paperheight=210mm, top=0.5in, bottom=0.5in, outer=0.5in, inner=0.75in]{geometry}
\usepackage{libertine}
\usepackage{lipsum}

% Let's do it
\begin{document}

\lipsum[1-7]

\end{document}


• You should see p 8 of the layouts documentation, which shows the construction of the page dimensions. – Werner Oct 2 '14 at 20:02
• Gary don't you just use memoirs own layout system instead of geometry? Top margin is from the top of the paper to the top of the text block. Then there is a further topskip down to the baseline of the first line of text – daleif Oct 2 '14 at 20:25
• The header is inside the top margin, and as far as I know the only way to set an absolute distance from the top of the page to the top of the header is to set the \uppermargin to your desired length and then add to it manually the height of your header. There must be a better way. – musarithmia Oct 2 '14 at 21:55
• When you say the margin should be x what do you mean? Should this include the header (at the top)? The footer (at the bottom)? The margin notes (at the side)? – cfr Oct 2 '14 at 22:40
• @Cfr: I used to assume that top margin is measured from most top paragraph to the top edge of page, until I saw the result. I thought I've misunderstood. It's a bit confusing. – Eko san Oct 3 '14 at 0:44

This is just an illustration of the method you might use, based on a very quick skim of memoir's documentation. No doubt you have more specific ideas about the dimensions you want but the key is to use memoir's abilities, rather than fighting them by loading geometry. (Otherwise, use a standard class such as book and then geometry is a great idea.)

\documentclass[12pt,twoside]{memoir}
\usepackage{libertine}
\setstocksize{210mm}{140mm}
\settrimmedsize{\stockheight}{\stockwidth}{*}
\setlrmarginsandblock{.75in}{.5in}{*}
\setulmarginsandblock{\dimexpr.5in+\baselineskip}{\dimexpr.5in+\baselineskip}{*}

• Thanks, Cfr. I forgot to mention. The running header should sit in the middle of top margin, instead of stick to the top edge (as sample image shown above). I might have to adjust the top margin to 0.75 in. – Eko san Oct 3 '14 at 1:18
• @Ekosan I don't really understand. Which 'top edge' is it 'sticking' to? memoir's documentation is extremely detailed. Given that you know what you want to do, I think it would be easiest if you would look through the documentation to get a clearer idea of how things work, and then edit your question accordingly. (But somebody else may understand better than I do.) – cfr Oct 3 '14 at 2:10
• Oh, sorry Cfr, It's my fault. I mean as my previous sceenshot above (not the screenshot you've just uploaded above). Really sorry... – Eko san Oct 3 '14 at 3:27
• Okay. I'll dive deeper into memoir docs soon. Thanks a lot. – Eko san Oct 3 '14 at 3:27