I am fixing my thesis template, and on the middle of it I found some texts are going out of the screen, randomly. After hours of work, I could narrow it down to a simple MWE, so I could post a question here asking about it:
\documentclass[10pt,openright,twoside,a5paper]{memoir}
\usepackage[english]{babel}
\usepackage[showframe]{geometry}
\setlength{\parindent}{1.6cm}
\begin{document}
\frenchspacing
\textbf{textbf: (encoding: T1, family: cmr, series: bx, shape: n, size: 10.5, baseline: 11.0pt)}
\end{document}
Why latex is letting the text goes out of the screen? How I can block latex from doing this?
D:\test2.tex:10: Overfull \hbox (5.92477pt too wide) in paragraph at lines 10--11[]\OT1/cmr/bx/n/10 textbf: (en-cod-ing: T1, fam-ily: cmr, se-ries: bx, shape:

\emergencystretchto a really large value to do this automatically when necessary — that guarantees no overfull boxes, at the risk of large spaces. I'm pretty sure this question is a duplicate though. – ShreevatsaR Aug 17 '17 at 03:50