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-rw-r--r--doc/nft.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/nft.txt b/doc/nft.txt
index 46e8dc53..13fe8b1f 100644
--- a/doc/nft.txt
+++ b/doc/nft.txt
@@ -44,6 +44,10 @@ understanding of their meaning. You can get information about options by running
*--file 'filename'*::
Read input from 'filename'. If 'filename' is -, read from stdin.
+*-D*::
+*--define 'name=value'*::
+ Define a variable. You can only combine this option with '-f'.
+
*-i*::
*--interactive*::
Read input from an interactive readline CLI. You can use quit to exit, or use the EOF marker,