Dnia 2013-05-01, o godz. 11:41:49 t...@tsdye.com (Thomas S. Dye) napisaĆ(a):
> Hi John, > > Jumping in late here, with apologies if that's left me wide of the > mark. > > John Hendy <jw.he...@gmail.com> writes: > > > On Wed, May 1, 2013 at 10:00 AM, Marcin Borkowski > > <mb...@wmi.amu.edu.pl> wrote: > > > Can you explain semantic vs. visual? As in you can more easily > > customize the meaning of \alert{} or \emph{} whereas \textbf{} and > > \textit{} only has one meaning? Sort of like using a css tag which > > can be later customized vs. specifically calling out exactly what > > you're thinking you want to do at the moment? > > IMHO, the best discussion of this difference is the first chapter of > Lamport's LaTeX User's Guide and Manual. Here is the gist as I > understand it: > > 1) A principle of typesetting is that the layout of a document should > reflect its logical structure. > > 2) A computer typesetting program can achieve this if it knows what > key parts of the document mean. > > 3) So, markup should be semantic, rather than visual. > > It is possible to achieve identical results using visual markup, of > course, but why not let the computer keep track of things instead? +1 Notice also that even LaTeX breaks the rule of "use only semantic markup in the document" (and in fact, there are cases when the rule is a bit fuzzy anyway). Finding examples of /visual/ markup in LaTeX (without semantic counterparts) are left as an exercise for the reader;). (Hint: rahzrengvbaf fglyrf qrcraq abg ba gur punenpgre bs gur rahzrengvba, ohg ba vgf qrcgu, naq jvgubhg cnpxntrf yvxr rahzvgrz vg'f abg rnfl gb qrsvar lbhe bja rahzrengvba fglyrf.) > > Sure, and understood. In general, I'm using *text* simply to call > > attention to something important. I work in product development, so > > something like: > > > > Customer response to product sampling: > > - *US:* blah blah blah > > - *China:* blah blah blah > > - *India: blah blah blah > > Here, to achieve semantic markup, you would use description lists > > - US :: blah > - China :: blah > - India :: blah > > The :: separator lets Org (and ultimately LaTeX) know that the part > before the separator is the term that is being described. And then use the enumitem package to customize the exact look of the description environment. > hth, > Tom Regards, -- Marcin Borkowski http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski Adam Mickiewicz University