From 13c416a9b1c2609e32f608a8858d5cf50cfd08c7 Mon Sep 17 00:00:00 2001
From: "Philip.Hazel" <Philip.Hazel@gmail.com>
Date: Fri, 24 Mar 2017 18:35:42 +0000
Subject: [PATCH] Documentation update.

---
 doc/pcre2test.1 | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/doc/pcre2test.1 b/doc/pcre2test.1
index 6170bd3..4d5dc73 100644
--- a/doc/pcre2test.1
+++ b/doc/pcre2test.1
@@ -1059,7 +1059,7 @@ pattern.
       jitstack=<n>               set size of JIT stack
       mark                       show mark values
       match_limit=<n>            set a match limit
-      memory                     show memory usage
+      memory                     show heap memory usage
       null_context               match with a NULL context
       offset=<n>                 set starting offset
       offset_limit=<n>           set offset limit
@@ -1333,8 +1333,11 @@ is added to the non-match message.
 .SS "Showing memory usage"
 .rs
 .sp
-The \fBmemory\fP modifier causes \fBpcre2test\fP to log all memory allocation
-and freeing calls that occur during a match operation.
+The \fBmemory\fP modifier causes \fBpcre2test\fP to log all heap memory
+allocation and freeing calls that occur during a call to \fBpcre2_match()\fP.
+These occur only when a match requires a bigger vector than the default for
+remembering backtracking points. In many cases there will be none. No heap
+memory is allocated during matching with \fBpcre2_dfa_match\fP or with JIT.
 .
 .
 .SS "Setting a starting offset"