diff --git a/documentation/content/en/books/porters-handbook/porting-dads/_index.adoc b/documentation/content/en/books/porters-handbook/porting-dads/_index.adoc
--- a/documentation/content/en/books/porters-handbook/porting-dads/_index.adoc
+++ b/documentation/content/en/books/porters-handbook/porting-dads/_index.adoc
@@ -399,6 +399,8 @@
 
 Ports that do not have any architecture-dependent files or requirements are identified by setting `NO_ARCH=yes`.
 
+Packages built from such ports have their architecture string ending in `:*` (wildcard architecture) as opposed to, for example, `freebsd:13:x86:64` (amd64 architecture).
+
 [NOTE]
 ====
 `NO_ARCH` is meant to indicate that there is no need to build a package for each of the supported architectures.