Use fonts suitable for on-screen reading

The Latin Modern(?) font used is very thin and doesn't render very well on monitors with low PPI. Using fonts that have been hinted for low resolution displays might be better as it is easier on the eye.

There are many such free fonts like Tinos from Google and many other fonts that are already distributed with LaTeX or on fonts.google.com

I tried building with Tinos & Fira Mono and it looks fine to me. Attached sample patch.

--- std.tex.old	2022-08-05 11:31:11.295782333 -0400
+++ std.tex	2022-08-05 15:30:01.205108057 -0400
@@ -26,9 +26,10 @@
 \usepackage[final]{microtype}
 \usepackage[splitindex,original]{imakeidx}
 \usepackage{multicol}
-\usepackage{lmodern}
 \usepackage{xcolor}
-\usepackage[T1]{fontenc}
+\usepackage[TS1,T1]{fontenc}
+\usepackage{tinos}
+\usepackage[scale=0.8,lf]{FiraMono}
 \usepackage[pdftex, final]{graphicx}
 \usepackage[pdftex]{hyperref}
 \hypersetup{pdftitle={C++ Working Draft},

Start with std.tex and review the current font package declarations alongside the supplied Tinos and Fira Mono sample patch. Build the draft and compare the resulting PDF on low-PPI displays; the work is done when the selected fonts improve on-screen readability without disrupting the document output.