1 files changed, 15 insertions, 0 deletions
diff --git a/txr.1 b/txr.1
index c36be80c..47d41801 100644
--- a/txr.1
+++ b/txr.1
@@ -19284,6 +19284,21 @@ always matches.  If such a clause is placed as the last clause of a
 it provides a fallback case, whose forms are evaluated if none of the
 previous clauses match.
 
+.coNP Function @ built-in-type-p
+.synb
+.mets (built-in-type-p << object )
+.syne
+.desc
+The
+.code built-in-type-p
+function returns
+.code t
+if
+.meta object
+is a symbol which is the name of a built-in type.
+For all other objects it returns
+.codn nil .
+
 .SS* Object Equivalence
 
 .coNP Functions @, identity @ identity* and @ use