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-rw-r--r--Doc/Zsh/mod_system.yo5
1 files changed, 5 insertions, 0 deletions
diff --git a/Doc/Zsh/mod_system.yo b/Doc/Zsh/mod_system.yo
index 5feb7dd99..7f2009b43 100644
--- a/Doc/Zsh/mod_system.yo
+++ b/Doc/Zsh/mod_system.yo
@@ -68,6 +68,11 @@ item(tt(trunc))(
 truncate file to size 0
 )
 enditem()
+
+To close the file, use one of the following:
+
+example(tt(exec {)var(fd)tt(}<&-)
+tt(exec {)var(fd)tt(}>&-))
 )
 findex(sysread)
 redef(SPACES)(0)(tt(ifztexi(NOTRANS(@ @ @ @ @ @ @ @ ))ifnztexi(        )))