$o .= <<END;
/Times-Bold findfont 15 scalefont setfont $black
gsave
- 0.16 0.15 dc translate
+ 0.16 0.20 dc translate
0.60 dup scale
$input
- 10 0 translate
- 0 -10 moveto (...) show
- 20 0 translate
+ 8 -12 moveto (...) show
+ 27 0 translate
$input
grestore
+
+gsave
+/Times-Roman findfont
+ 32 scalefont setfont
+ 0.48 0.14 dc moveto (}) show
+grestore
+
+gsave
+ 0.83 0.25 dc translate
+ 0.85 dup scale
+ ${\ chip(['0 0 0 0.5', ''], 0) }
+grestore
+
+gsave
+ 0.72 0.22 dc translate
+ 0.50 dup scale
+ $black 0 0 moveto (?+?) show
+grestore
END
$o .= exposition(<<END);