diff -Naur twm-1.0.9-original/src/Makefile.in twm-1.0.9/src/Makefile.in
--- twm-1.0.9-original/src/Makefile.in	2015-04-17 05:36:44.000000000 +0000
+++ twm-1.0.9/src/Makefile.in	2017-11-13 18:55:24.309151455 +0000
@@ -356,7 +356,7 @@
 top_builddir = @top_builddir@
 top_srcdir = @top_srcdir@
 AM_YFLAGS = -d
-rcdir = ${datadir}/X11/twm
+rcdir = /etc/X11/app-defaults
 dist_rc_DATA = system.twmrc
 AM_CPPFLAGS = \
 	-DXVENDORNAME=\"The\ X.Org\ Foundation\"		\
diff -Naur twm-1.0.9-original/src/system.twmrc twm-1.0.9/src/system.twmrc
--- twm-1.0.9-original/src/system.twmrc	2015-04-17 05:36:39.000000000 +0000
+++ twm-1.0.9/src/system.twmrc	2017-11-13 18:50:22.490859332 +0000
@@ -80,6 +80,8 @@
 "Show Iconmgr"	f.showiconmgr
 "Hide Iconmgr"	f.hideiconmgr
 ""		f.nop
+"Cards"		f.exec "exec sudo flcards &"
+""		f.nop
 "Xterm"		f.exec "exec xterm &"
 ""		f.nop
 "Kill"		f.destroy