diff --git a/SPEC.md b/SPEC.md
index 8acbec1..c589769 100644
--- a/SPEC.md
+++ b/SPEC.md
@@ -706,7 +706,7 @@ language syntax](#grammar-language) is defined below.
 ```
 document := bom? nodes
 
-nodes := (line-space* node)* line-space*
+nodes := ('/-' plain-node-space* node)? (line-space* node)* line-space*
 
 plain-line-space := newline | ws | single-line-comment
 plain-node-space := ws* escline ws* | ws+
diff --git a/tests/test_cases/expected_kdl/initial_slashdash.kdl b/tests/test_cases/expected_kdl/initial_slashdash.kdl
new file mode 100644
index 0000000..d74a990
--- /dev/null
+++ b/tests/test_cases/expected_kdl/initial_slashdash.kdl
@@ -0,0 +1 @@
+another-node
diff --git a/tests/test_cases/input/initial_slashdash.kdl b/tests/test_cases/input/initial_slashdash.kdl
new file mode 100644
index 0000000..aadeeb7
--- /dev/null
+++ b/tests/test_cases/input/initial_slashdash.kdl
@@ -0,0 +1,2 @@
+/-node here
+another-node