6.7.1 Top new questions this week

6.7.1.1 Trying to understand the definition of \newcommand (complex handling of parameter tokens)
6.7.1.2 How to force children in a tree to go in the right direction?
6.7.1.3 How does one enumerate and apply a macro to every character in a string token?
6.7.1.4 Could you tell me how to Count intersection points in tikz?
6.7.1.5 Real and Imaginary Parts
6.7.1.6 Apply command on nth character of a word
6.7.1.7 How to place a `\draw` near the page number using `tikzpicture` environment
6.7.1.1 Trying to understand the definition of \newcommand (complex handling of parameter tokens)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=529811

I'm still trying to understand how exactly tex parses documents. This time I'm trying to understand all the parameter-tokens-handling in \newcommand and friends, which looks like black magic to me -  ... 
[macros] [arguments] [definition]
 
asked by Dennis MA~\274ller https://tex.stackexchange.com/landing/r/digest?cta=user&id=201606 14 votes
answered by Phelype Oleinik https://tex.stackexchange.com/landing/r/digest?cta=user&id=134574 12 votes
6.7.1.2 How to force children in a tree to go in the right direction?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=530011

I am drawing a tree and this is my effort below. It works OK except I would like 8 to be the left child of 5 (not drawn straight below it) and 10 to the right child of 8 (not drawn straight below it).  ... 
[tikz-pgf]
 
asked by fomin https://tex.stackexchange.com/landing/r/digest?cta=user&id=206004 11 votes
answered by manooooh https://tex.stackexchange.com/landing/r/digest?cta=user&id=152550 13 votes
6.7.1.3 How does one enumerate and apply a macro to every character in a string token?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=529947

In this example, the bit representation of BIOS font from '@' to 'G' is in two forms.  The first is a sequence of 1s and 0s separated by commas.  The second is a string of 1s and 0s crammed into  ... 
[tikz-pgf] [macros]
 
asked by jlettvin https://tex.stackexchange.com/landing/r/digest?cta=user&id=165902 10 votes
answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 7 votes
6.7.1.4 Could you tell me how to Count intersection points in tikz?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=529368

in this picture: there are 6 intersection points. I need 6 auto change when number of intersection points change. Can you help me? 
my code: 
\documentclass[tikz,border=5mm]{standalone} 
... 
[tikz-pgf]
 
asked by Jack Nguya'>>\205n https://tex.stackexchange.com/landing/r/digest?cta=user&id=184953 8 votes
answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 8 votes
6.7.1.5 Real and Imaginary Parts

https://tex.stackexchange.com/landing/r/digest?cta=question&id=529882

There are multiple questions on this site about redefining the real and imaginary part operators. Mine is a bit pedantic. I am quite used to the standard symbols embedded into LaTeX. However for my  ... 
[math-mode] [fonts]
 
asked by Luke Collins https://tex.stackexchange.com/landing/r/digest?cta=user&id=78913 7 votes
answered by Vincent https://tex.stackexchange.com/landing/r/digest?cta=user&id=201628 8 votes
6.7.1.6 Apply command on nth character of a word

https://tex.stackexchange.com/landing/r/digest?cta=question&id=529437

How to create a macro with two arguments the first representing the order of character in the word and the second is the word itself. 
\documentclass{article} 
\usepackage{xcolor} 
\begin{document} 
... 
[macros]
 
asked by Salim Bou https://tex.stackexchange.com/landing/r/digest?cta=user&id=54817 7 votes
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 13 votes
6.7.1.7 How to place a `\draw` near the page number using `tikzpicture` environment

https://tex.stackexchange.com/landing/r/digest?cta=question&id=529696

Please consider this MWE: 
\documentclass{article} 
\usepackage[a4paper,margin=1in,footskip=0.25in]{geometry} 
\usepackage{tikz} 
\usepackage{fancyhdr} 
\pagestyle{fancy} 
\fancyhf{} 
\rfoot{ 
... 
[tikz-pgf] [positioning] [draw]
 
asked by manooooh https://tex.stackexchange.com/landing/r/digest?cta=user&id=152550 6 votes
answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 6 votes