Which elsarticle documentclass parameters in LaTeX should I use for different Elsevier journals? So here is the thing, I recently submitted a paper to an Elsevier Journal (EJOR) and prepared it using LaTeX. I used the elsarticle documentclass that Elsevier provides.

When doing this I tried to figure out how the layout of the resulting PDF should be. Specifically, I could not find any information on the parameters of the LaTeX documentclass.

In the template from Elsevier there are these example snippets (commented out):

%% Use the options 1p,twocolumn; 3p; 3p,twocolumn; 5p; or 5p,twocolumn
%% for a journal layout:
%% \documentclass[final,1p,times]{elsarticle}
%% \documentclass[final,1p,times,twocolumn]{elsarticle}
%% \documentclass[final,3p,times]{elsarticle}
%% \documentclass[final,3p,times,twocolumn]{elsarticle}
%% \documentclass[final,5p,times]{elsarticle}


So depending on the journal, I have to choose different parameters. For EJOR I used this

\documentclass[authoryear,final,5p,times,twocolumn]{elsarticle}


although I am not entirely sure this is correct. I was not able to find any information on this: which journal requires which parameters? EJOR looked like 5p, but isn't there an official source for this? Next, I want to publish to Computers &amp; Security and, again, I can't find a hint on this. Am I looking in the wrong place?Does anyone know more about this? A site where they publish this?

Thanks a lot!
The options not only allow you to chose between three different two-column layouts but also one column modes. The role of the two-column mode is to allow the journal to type-set the article once it should be published. You can therefore use the settings to to see the length of your final article (in terms of journal pages. In other words, you as an author have access to the type-setting mode of the journal paper, this is a side-effect of the versatility of LaTeX class construction in the manuscript handling phase. 

The fact that there are no instructions for which to use means you can chose whichever suits the format best. I am, however, sure the journal can take the final manuscript in any of the modes since the only thing they need to do is to switch a comment between two lines if your choice is not optimal. I would send in the manuscript in single-column format and let the journal worry about which of the formats they use in the end.