Coding

1. Systems: PHP
2. Math & Geometry: Python

   $\LaTeX$/TikZ

3. Scripts: Python
4. App: List of Modules (Woid)
5. use vs extends
6. Abstract vs specific code
7. CRUDs++
8. $this->ModuleName="Lessons";
$this->MyMod_Item_Name();
$this->MyMod_Items_Name();
   ...
9. Drawing: $\LaTeX$/TikZ

\begin{tikzpicture}

\node (p1) at (0,0) [circle,draw,fill=black]{};
\node (p2) at (5,0) [circle,draw,fill=black]{};

\node [left] at (p1) {Test~~~};
\node [right] at (p2) {~~Live};

\draw [-{Stealth[length=3mm]}] (p1) to [bend right=15](p2);
\draw [-{Stealth[length=3mm]}] (p2) to [bend right=15](p1);

\node (V1) at (2.5,0.7) {Data};
\node (V2) at (2.5,-0.7) {Code};

\end{tikzpicture}