add print buttons

lib/gv.style

diff --git a/lib/gv.style b/lib/gv.style
index 1268375..512e0e4 100644
--- a/lib/gv.style
+++ b/lib/gv.style
@@ -109,6 +109,8 @@
 			scaleButton<-90%*>\
 			pagemediaButton<-90%*>\
 			processButton<-90%*>\
+			printAll<-40%*>\
+			printMarked<-40%*>\
 		}\
 		viewFrame<+[2]-100%*+9999-100%>   \
 	}\