1.9.1 Top new questions this week

1.9.1.1 Underline just words, not the space between them

http://tex.stackexchange.com/questions/267550/underline-just-words-not-the-space-between-them

I need to typeset a sentence such that just the words are underlined, and not the space between the words. 
Using the \underline will include the spaces between the words. I could do it with something  ...
 

- asked by Rakesh (23 votes), answered by egreg (19 votes)

1.9.1.2 What is a primitive, a macro, and how do they compare?

http://tex.stackexchange.com/questions/267980/what-is-a-primitive-a-macro-and-how-do-they-compare

The title pretty much says it all.  If it helps, I found myself asking this question when reading this post about \par vs. \\.
 

- asked by C. Gonzalez (16 votes), answered by Christian Hupfer (15 votes)

1.9.1.3 polygons side by side

http://tex.stackexchange.com/questions/267291/polygons-side-by-side

Could help me please, I tried to draw many polygons side by side without success! 
This is what I want 
My MWE: 
\documentclass{article} 
\usepackage{xcolor} 
\usepackage{pgf,tikz} 
...
 

- asked by Haouam (15 votes), answered by Gonzalo Medina (12 votes)

1.9.1.4 Domino tile images LaTeX

http://tex.stackexchange.com/questions/267255/domino-tile-images-latex

Is there a LaTeX package that will allow me to draw domino tiles without having to draw each one separately in tikz?
 

- asked by Brittany (14 votes), answered by Paulo Cereda (20 votes)

1.9.1.5 Converting this drawing into Tikz

http://tex.stackexchange.com/questions/267276/converting-this-drawing-into-tikz

I tried to create the code 
\begin{tikzpicture}[scale=0.6] 
\fill [mycolor] (0,0) rectangle (10,5.5); 
\node at (0,-0.3) (A) {}; 
\node at (10,-0.3) (B) {}; 
\draw[->] (A.south) to[out=-20,in=-160]  ...
 

- asked by Cauchy the Dog (14 votes), answered by Gonzalo Medina (13 votes)

1.9.1.6 How are curly braces used?

http://tex.stackexchange.com/questions/267412/how-are-curly-braces-used

In TeX, the same characters (namely, { and }) are used for grouping and to define macros (\def{...}). I think that this is because it can be distinguished from context which one is which. 
So,  ...
 

- asked by Igor Liferenko (11 votes), answered by egreg (11 votes)

1.9.1.7 LaTeX for music

http://tex.stackexchange.com/questions/267615/latex-for-music

I need help how to construct in Latex the following: 
This is one of the standard chord explanations in the music theory or practice. It is used to explain the harmonic processes in a piece of  ...
 

- asked by St.Palamas (11 votes), answered by Tobi (20 votes)