Document -a option.

[open-adventure.git] / advent.adoc

diff --git a/advent.adoc b/advent.adoc
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--- a/advent.adoc
+++ b/advent.adoc
@@ -5,7 +5,7 @@
 advent - Colossal Cave Adventure
 
 == SYNOPSIS ==
-*advent* [-l logfile] [-o] [-r savefile] [-s]
+*advent* [-l logfile] [-o] [-r savefile] [script...]
 
 == DESCRIPTION ==
 The original Colossal Cave Adventure from 1976-77 was the origin of all
@@ -42,10 +42,16 @@ There have been no gameplay changes.
 
 -r:: Restore game from specified file
 
+-a:: Load from specified file and autosave to it on exit or signal.
+
 -o:: Old-style.  Restores original interface, no prompt or line editing.
      Also ignores new-school one-letter commands l, x, g, z, i. Also
      case-smashes and truncates unrecognized text when echoed.
 
+Normally, game input is taken from standard input.  If script file
+arguments are given, input is taken fron them instead.  A script file
+argument of '-' is taken as a directive to read from standard input.
+
 == BUGS ==
 
 The binary save file format is fragile, dependent on your machine word