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-rw-r--r--man/1/m413
1 files changed, 9 insertions, 4 deletions
diff --git a/man/1/m4 b/man/1/m4
index ebfa9557..fcfb3e2d 100644
--- a/man/1/m4
+++ b/man/1/m4
@@ -199,10 +199,15 @@ number selecting the first character;
the third argument indicates the length of the substring.
A missing third argument is taken to be large enough to extend to
the end of the first string.
-\" .TP
-\" syscmd
-\" executes the shell command given in the first argument.
-\" No value is returned.
+.TP
+syscmd
+Runs the first argument as an
+.IR sh (1)
+command.
+No value is returned.
+Note that the output of a command can be redirected to a temporary file named by
+.BR maketemp ,
+included, and then removed.
.TP
translit
Transliterates the characters in its first argument