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-rw-r--r--Doc/Zsh/params.yo5
1 files changed, 4 insertions, 1 deletions
diff --git a/Doc/Zsh/params.yo b/Doc/Zsh/params.yo
index 7999d297b..a91e99fbd 100644
--- a/Doc/Zsh/params.yo
+++ b/Doc/Zsh/params.yo
@@ -805,7 +805,10 @@ cushion for saving duplicated history events.
 )
 vindex(HOME)
 item(tt(HOME) <S>)(
-The default argument for the tt(cd) command.
+The default argument for the tt(cd) command.  This is not set automatically
+by the shell in tt(sh), tt(ksh) or tt(csh) emulation, but it is typically
+present in the environment anyway, and if it becomes set it has its usual
+special behaviour.
 )
 vindex(IFS)
 item(tt(IFS) <S>)(