如何让inform 7在序号(行)后打印一行文字?

How to make inform 7 print a line of text after the serial number (line)?

我想在序列号行之后打印一行,如下例所示:

About About
A fancy story by A. Author
Release 1 / Serial number 190926 / Inform 7 build 6M62 (I6/v6.33 lib 6/12N) 
(Type “about” for credits and game information.)

这是用扩展制作的吗?我在文档中没有找到关于此的任何信息...

After printing the banner text:
    say "(Type 'about' for credits and game information.)"

文档中的第 18.37 章。