- thread; that is, by default, <b>--format=json</b> sets
- <b>--entire-thread</b> The caller can disable this behaviour by
- setting <b>--entire-thread=false</b>
+ thread; that is, by default,
+
+ <b>--format=json</b> sets <b>--entire-thread</b> The caller can disable
+ this behaviour by setting <b>--entire-thread=false</b>
+
+ <b>sexp</b>
+
+ The output is formatted as an S-Expression (sexp). This
+ format is more robust than the text format for automated
+ processing. The nested structure of multipart MIME messages
+ is reflected in nested S-Expression output. By default, S-
+ Expression output includes all messages in a matching
+ thread; that is, by default,
+
+ <b>--format=sexp</b> sets <b>--entire-thread</b> The caller can disable
+ this behaviour by setting <b>--entire-thread=false</b>