diff --git a/stdlib/rtl/oh_lfsr.v b/stdlib/rtl/oh_lfsr.v
index 3fcd9d9..d61d49f 100644
--- a/stdlib/rtl/oh_lfsr.v
+++ b/stdlib/rtl/oh_lfsr.v
@@ -9,10 +9,13 @@
  *   dynamically programming the taps and seed. Shift is from MSB to LSB,
  *   feedback bit is from LSB.
  *
- * - The lsfr updates when enable is set to 1.
+ * - The state is updated when 'en' is high.
  *
  * - Any non-zero seed value is legal.
  *
+ * - An LSFR of size N can create pseudo random cycles of shorter polynomials
+ *   by zero padding the taps value up to the MSB.
+ *
  * - Driving taps externally is only practical with GALOIS configuration,
  *   since the massive xor tree would be prohibitive with FIBONACCI.