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§18.37. Printing the banner text
1. When it happens. The banner is the bibliographic masthead text, which typically looks something like this:
An Interactive Fiction by Emily Short
Release 1 / Serial number 050630 / Inform 7 build 2U98 (I6/v6.30 lib 6/10N) SD
(The serial and build numbers are those applying when the story file was last made: these ones are from the mid-2000s.) The banner is printed at the start of play, and when the player types "version" at the command line, and when say "[banner text]" occurs.
say "[the/-- banner text]"
This text substitution expands to the banner text giving bibliographic details of the current story file, rather like the opening credits of a movie, or the title page of a book.
2. The default behaviour. Prints the text above, giving the title, the headline, the author, the release number, the date of compilation (that's the serial number: YYMMDD), and version numbers of the Inform components used to put the story together.
3. Examples. (a) Adding a line to the banner:
After printing the banner text, say "DRM authentication code: 13S-451-2034u75y65u%%a1248."
(b) Simplifying the banner:
Rule for printing the banner text: say "Welcome." instead.
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The conch shell is in the Hut. After taking the shell for the first time: say "As you gather the oddly-warm conch shell into your arms, you experience a sudden flash of deja-vu...[banner text]"; move the player to the Tropical Beach.
Rule for printing the banner text when the player is not carrying the shell: do nothing.
(By tradition, and as a courtesy to all the people who have worked on Inform, authors ensure that the banner is printed some time near the beginning of each game played. So please only defer it, rather than suppress it altogether.)