# Contents review: not supported commands

We stress the importance of this phase of our work, since we want our contents to be of the best possible quality and to be as much formal and institutional as possible.

In this section we present some conventions that should be used for the review of the contents, in order to make this phase of our work as much uniform as possible and to reduce doubts on how a correction has to be made.

So far, these are the main conventions that has to be used:

• We do suggest not to use any mathematics in titles, since it won't be rendered both online and in the pdf version.
• OCG is not able to render properly the commands from the cancel package, as a consequence of this in the pdf you won't see formulas in which commands from this LaTex package is used. Hence we propose these substitutions:
• The \cancel{text} command generates problems as it follows:
${\displaystyle {\frac {{\cancel {2x}}(3x+2)}{\cancel {2x}}}}$
Since this is quite not necessary we propose to delete this command from formulas. Before doing so check that in the pdf the \cancel{} command is actually no rendered, otherwise you can leave this command in the formulas.
• The \cancelto{value}{expression} is used to make evident that a certain quantity goes to zero, as it follows:
${\displaystyle {\cancelto {0}{\sin(x)\mid _{0}^{\pi }}}}$
As above, do not delete this command if you can see it properly working in the pdf, otherwise we propose the substitution with \underset{value}{\underbrace{argument}}:

${\displaystyle {\underset {=0}{\underbrace {\sin(x)\mid _{0}^{\pi }} }}}$

• The gather environment is used to write formulas centered and one line above the other, usually you can find it with the command \notag (used in LaTex to avoid the numeration of the line/equation). Since, up to now, we do not have an internal system of numeration of equations and, moreover, considering that this is a LaTex environment not rendered in the pdf(nor in the web pages) the use of this environment can be substituted with dmath tags. More precisely: if you find the use of the gather environment (\begin{gather} \end{gather}) remove it and use the dmath tag; you also have to remove the \notag command at the end of each line, since it would be useless (and probably would generate problems)
• Sometime you can find the use of the \label{} command: in LaTex is used to create a direct reference to a particular equation/theorem. As stated above we this would be useless, since no system of reference is present. Feel free to remove all the \label{} commands but be careful: in the text the author may have used this command to have a direct reference to a particular equation/theorem, meaning that you do not only have to remove the command from the math but you also have to look up for it in the text and remove it and substitute \label{} with the complete equation, the name of the theorem or with any word/sentence that can replace the aim of this command.
• The \footnote{text} command is used to add footnotes in LaTex, but it is not used in mediawiki and not rendered by OCG. We suggest to substitute it with the template Basic-Notes at the end of the page.
• This convention is both for the review phase and the editing phase: use templates when needed. If in the review phase you find parts that could have been written using a template, modify these parts in the correct way: for example, when you find a proof written as Proof substitute it with the Proof template.
• The \emph{text} command is not rendered. We do suggest to remove it, since actually is not essential. Otherwise you can substitute the \emph{text} with text, i.e. include it in two pairs of apostrophes like ''text''.