diff --git a/src/dvsim/testplan.py b/src/dvsim/testplan.py
index dee1a95a..8cb25a2d 100644
--- a/src/dvsim/testplan.py
+++ b/src/dvsim/testplan.py
@@ -16,9 +16,31 @@
 
 
 class Result:
-    """The results for a single test."""
+    """The results for a job."""
 
-    def __init__(self, name, passing=0, total=0, job_runtime=None, simulated_time=None) -> None:
+    def __init__(
+        self,
+        name: str,
+        passing: int = 0,
+        total: int = 0,
+        job_runtime: float | None = None,
+        simulated_time: float | None = None,
+    ) -> None:
+        """Construct a Result with the given parameters.
+
+        Args:
+          name: The name of the test.
+
+          passing: The number of runs that passed (possibly different seeds).
+
+          total: The number of runs that happened (will be at least as large as
+          passing).
+
+          job_runtime: If not None, the number of seconds taken by the job.
+
+          simulated_time: If not None, the simulated time in microseconds.
+
+        """
         self.name = name
         self.passing = passing
         self.total = total