doc: small omission in flatcar.

* txr.1: Document that flatcar and flatcar* accept
an atom argument, which is returned.

1 files changed, 4 insertions, 0 deletions

diff --git a/txr.1 b/txr.1
index dc316434..e4b2b41c 100644
--- a/txr.1
+++ b/txr.1
@@ -23176,6 +23176,10 @@ atoms which appear in
 .code cdr
 fields.
 
+If the
+.meta tree
+argument is an atom, it is returned.
+
 The
 .code flatcar*
 function