message: add paper target
diff: @@ -41,6 +41,9 @@ clean:
  rm -f $(LIB) *.o *.gcda *.gcno *.d
  find . -name '*~' -print0 | xargs -0 rm -f
  +paper:
  + $(MAKE) -C paper
  +
  # double $$ in egrep pattern is because we're embedding this shell command in a Makefile
  TAGS:
  @echo " TAGS"
  @@ -48,4 +51,4 @@ TAGS:
  -include $(OBJS:.o=.d)
  -.PHONY: all clean install TAGS
  +.PHONY: all clean install paper TAGS
  