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### \bf is an undefined command [duplicate]

I am very new to Latex and I am getting this error: Class scrartcl Error: undefined old font command \bf'. See the scrartcl class documentation for explanation. Type H <return> for immediate ...
1k views

### Difference between \sl and \slshape? [duplicate]

What's the difference between using \sl and \slshape? I don't see any in the pdf.
119 views

### Parse markdown automatically (just emphasis) without luatex [duplicate]

I want to parse markdown emphasis automatically in XeLaTeX. This basically means converting asterisks either side of a word into the \emph{word} that LaTeX uses. I know that more complex Markdown ...
56 views

### How to make **hello** produce hello in italics? [duplicate]

I know I can make *hello* produce hello in bold typeface. But how would I, in addition, make **hello** produce hello in italics? \documentclass{article} \begingroup\lccode\~=`* \lowercase{\...
20k views

### What are the most common mistakes that beginners of (La)TeX and Friends make?

I want to collect the most common mistakes, misconceptions, pitfalls, etc that (La)TeX and Friends users make. Please one answer for each mistake, misconception, pitfall, etc. I am only interested in ...
877k views

### “Correct” way to bold/italicize text?

Is either of these considered better/more readable/more "proper"/more conventional than the other for making text bold? If so, what is the reason? I like my text \textbf{bold} versus: I like my ...
21k views

### Why is LaTeX so complicated? [closed]

I have been using LaTeX professionally almost every day for almost 10 years, so I think I can say that, by now, I more or less know what I'm doing. I also do a lot of ordinary computer programming, in ...
8k views

### Why can't the end code of an environment contain an argument?

Environments are allowed to have arguments, but reference to those arguments can only appear in the opening code of the environment, and not the closing code. What is the reason for this, and are ...
29k views

### How do I repeat a theorem number?

Often in my papers I want to mention theorems in the introduction that are introduced in more detail and proved in a later section. I'd like to include the statement of these theorems twice over, ...
63k views

### How to construct a coloured box with rounded corners

Here is the specs of the box. Color of the bar rule should be: \definecolor{mycolor}{rgb}{0.122, 0.435, 0.698} Radius of the 4 corners of the box: 4pt Thick line = 0.5pt Text should be 6pt ...
33k views

### “Too many math alphabets” error

I just got the error Too many math alphabets used in version normal. on a document I'm editing. What can I do to fix this, other than stop using an alphabet? All I've found online is instructions ...
35k views

### Changing style of Proof

I'm using the \begin{proof} of the amsthm package. And I want to change the style of the Proof word that is added in the beginning. By default it is italic, I want to make it bold. How can I do it?
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### What do \@firstoftwo and \@secondoftwo do?

The LaTeX kernel uses these two all over the place. For example, apparently the correct way of defining something like \ifeq{\macro 1}{\macro 2}{true}{false} is (note Martin's response: each case ...
4k views

### Use Markdown-style formatting for bold and italic

I rather like the system here where *...* is italic, **...** is bold, and ***...*** is bold italic. Is it possible to do that in (La)TeX? A MWE that implements the first one: \documentclass{article} ...
36k views

### How to align text to the right in math mode?

I have a table of formulas, some have a description next to them, I want the equations to appear left flush and the text between parentheses right flush. I was writing it in the following way. \...
104k views

### How to bold just one word in a line

If I have a line of text, how do I make just the first word bold? I tried this: \bf{NTn} = Number of lines but it made the entire line bold.
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### Can I get $$…$$ to behave like $…$?

Is it possible to modify LaTeX so that good old $$...$$ behaves like $...$ (and by this I mean that it should be synonymous to it). If yes: Dear LaTeX3 developer, please integrate this into LaTeX3! ...
2k views

### Why are these commands considered as bad practice?

I was reading LaTeX: Do not use these commands, but the author didn't explain why they are bad. Could anyone help me understand. \\ (except inside a special environment like tabular, array, or ...
1k views

### Is there any reason not to use \let to redefine a deprecated control sequence to the currently recommended one?

I understand that \bf and \it are both deprecated in the current version of LaTeX. To the best of my knowledge, the correct control sequences replacing them are \bfseries and \itshape. Is there any ...
37k views

### customizing the algorithmic package: break and loop labels

I would like to add two customizations to the algorithmic package: introduce a new break command and have the possibility to provide labels to the LOOP so that break {label} is clear to which loop is ...
11k views

### Memoir class and Bibtex

I have biblio.bib: @article{XX, title={{Title}}, author={Author}, journal={Journal Title}, volume=1, number=11, pages={1-2}, year=1666 } And myfile.tex \documentclass[oneside]{memoir} \...
28k views

### Space between lines

I try to typeset title pages and use LARGE and bold for this. The problem is that the lines seem to be too close to each other. I think it looks bad. Is this the way it is supposed to be? Is there a ...
29k views

### Merge columns in LaTeX

I would like to merge column in LaTeX. I can make that but this line is incomplete because it still open on the left. Perhaps you will not understand what I mean, but this is the code that I wrote \...
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### Synonyms for \bfseries and \itshape and such?

Seeing as it is quite confusing for non-TeX expert to know how to specify italic or bold font, and the names such as \bfseries are not straightforward... Is there a package that defines synonyms like ...
9k views

### ! Paragraph ended before \@optionaltemp was complete

I'm desperate, can't figure out what's going on... So here's my code for a gloosed example: \a \begingl \gla nie ale jeśli ją \underline{pan} \underline{zobaczy} \underline{będzie} \underline{pan} \...
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### Why is the \bf command applied to more than I asked?

MWE: \documentclass{article} \usepackage{bm} \begin{document} $$x(t), \bf{x}(t), \bf{x(t)}$$ \end{document} Result: Question: Why are the second and third x(t) typeset the same? In the second ...
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### Remove spaces after a custom definition

As scientific species names should be written in italic, I have adopted a shortcut to do this in LaTex by creating a definition in the preamble: \def\GM{{\it Gadus morhua~}} Then it's easy to call ...
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### How can I get TeXstudio's syntax highlighting to recognize an unknown command?

TeXstudio does not recognize the LaTeX command \rm (red highlighting in the document, with the message: unrecognized command), even after I activate all possible completion files (.cwl). In such a ...
I have written in my work $X^{+},\,\rm{e}^{X},\,|X|^{p}$. Why is the second and third term not in italics?