--- cmd/gvpr/gvpr.1.orig	2023-01-21 19:59:25 UTC
+++ cmd/gvpr/gvpr.1
@@ -3,6 +3,15 @@
 .  ns
 .  TP \\$1
 ..
+.de EX
+.fam C
+.nf
+..
+.de EE
+.fam
+.fi
+..
+
 .TH GVPR 1 "29 August 2013"
 .SH NAME
 gvpr \- graph pattern scanning and processing language
