doc: fix incomplete range literal desc.

* txr.1: describe from and to expressions of
range literals.

1 files changed, 10 insertions, 0 deletions

diff --git a/txr.1 b/txr.1
index 6b4309df..90c0afb9 100644
--- a/txr.1
+++ b/txr.1
@@ -10452,6 +10452,16 @@ Both expressions are literal objects, not subject to evaluation.
 The notation
 .code #R
 followed by a two-element list syntax denotes a range literal.
+It combines
+.meta from
+and
+.meta to
+expressions, themselves literals not subject to
+evaluation, producing the range object whose corresponding
+.code to
+and
+.code from
+fields are the objects denoted by these expressions.
 
 .coNP The @ .. notation
 In \*(TL, there is a special "dotdot" notation consisting of a pair of dots.