2.18.3 Can you answer these questions?

2.18.3.1 How to write below textheight and above footer
2.18.3.2 Nesting tikzpictures, style inheritance and save box
2.18.3.3 highlight text between selector without highlighting nor deleting the selectors

Can you answer these?

2.18.3.1 How to write below textheight and above footer

http://tex.stackexchange.com/questions/309200/how-to-write-below-textheight-and-above-footer

MCQ Paper is mentioned below (Thanks to Erik) ; 
\documentclass[addpoints,answers,10pt]{exam} 
\setlength\textheight{15cm} 
\setlength{\footskip}{8.5cm} 
\providecommand{\myquestion}{% 
\question 
...
 
- asked by Pawan Mude 2votes
2.18.3.2 Nesting tikzpictures, style inheritance and save box

http://tex.stackexchange.com/questions/309101/nesting-tikzpictures-style-inheritance-and-save-box

Throughout my document, I need a custom symbol, which I draw using TikZ. I have created a macro for it, so I do not need to copy the picture. I also need to use the symbol within other tikzpictures.  ...
 
- asked by JPW 3votes
2.18.3.3 highlight text between selector without highlighting nor deleting the selectors

http://tex.stackexchange.com/questions/308612/highlight-text-between-selector-without-highlighting-nor-deleting-the-selectors

So I'm trying to render something beautiful for my PHP code using the \lstdefinestyle command. 
I think the basic configuration is good, but I would like to highlight the function name to render it in  ...
 
- asked by guillaume latour 4votes