Change to teletype font with more distinguishable boldface variant

mlsshared.sty

@@ -6,6 +6,15 @@
 % characters to also produce an \allowbreak{} following the directory separator.
 \newcommand{\filename}[1]{\mbox{\textsf{#1}}}
 
+% Pick a tt font that meets all of the following requirements:
+% - Not too wide (to reduce need for manual breaking of long lines)
+% - Has boldface variant that is distinctively heavier than its medium weight variant.
+% - Medium weight variant is heavy enough to not make non-black colors blend too much with the
+%   white background due to anti-aliasing and similar effects.
+% Warning: Note that changing to a font with different width -- especially a wider one -- means
+% that existing manual line breaks are potentially becoming out of place.
+\usepackage{newtxtt}
+
 \usepackage{listings}
 \usepackage{color}
 \usepackage[table]{xcolor}