/usr/bin/monodocs2html is in monodoc-base 4.2.1.102+dfsg2-7ubuntu4.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37  | #!/bin/sh
cmd_line=
for option do
	case "$option" in
		-dest:*)
			dir=`echo "$option" | sed 's/^-dest://'`
			cmd_line="$cmd_line -o \"$dir\""
			;;
		-dumptemplate)
			cmd_line="$cmd_line --default-template"
			;;
		-ext:*)
			ext=`echo "$option" | sed 's/^-ext://'`
			cmd_line="$cmd_line --ext=$ext"
			;;
		-onlytype*)
			# compat; ignore
			;;
		-source:*)
			s=`echo "$option" | sed 's/^-source://'`
			cmd_line="$cmd_line $s"
			;;
		-template:*)
			template=`echo "$option" | sed 's/^-template://'`
			cmd_line="$cmd_line --template=$template"
			;;
		-V | -version)
			# compat; ignore
			;;
		*)
			cmd_line="$cmd_line $option"
			;;
	esac
done
exec mdoc export-html $cmd_line
 |