From 6ba995ca8bcb9e20965fd2c09876eeb44c777f59 Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Wed, 24 May 2017 06:52:32 -0700
Subject: doc: point out relationship between juxt and callf.

* txr.1: Under callf, give equivalence to juxt.
Also refer to callf from juxt.
---
 txr.1 | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/txr.1 b/txr.1
index 4f694360..ef497f22 100644
--- a/txr.1
+++ b/txr.1
@@ -38956,6 +38956,12 @@ implementation:
               funcs)))
 .cble
 
+The
+.code callf
+function generalizes
+.code juxt
+by allowing the combining function to be specified.
+
 .TP* Example:
 
 .cblk
@@ -39302,6 +39308,22 @@ arguments:
   -> ((1 1) (4 4))
 .cble
 
+The following equivalence holds between
+.code juxt
+and
+.codn callf :
+
+.cblk
+  [juxt f0 f1 f2 ...]  <-->  [callf list f0 f1 f2 ...]:w
+.cble
+
+Thus,
+.code juxt
+may be regarded as a specialization of
+.code callf
+in which the main function is implicitly
+.codn list .
+
 .coNP Function @ mapf
 .synb
 .mets (mapf < main-function << arg-function *)
-- 
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