diff --git a/elements/astrocyte/appunti/2026-06-04-modulation-of-future-behavior.md b/elements/astrocyte/appunti/2026-06-04-modulation-of-future-behavior.md
index 32d591d..faed59b 100644
--- a/elements/astrocyte/appunti/2026-06-04-modulation-of-future-behavior.md
+++ b/elements/astrocyte/appunti/2026-06-04-modulation-of-future-behavior.md
@@ -9,6 +9,7 @@ Together these three systems form a hierarchical filter: Ca²⁺ asks did someth
 
 
 ## signal state variables
+```Gen
 // ── Ca²⁺ : event recorder ──────────────────────────────────────
 pre_Ca_residual // leftover Ca²⁺ between spikes — encodes recent history
 post_Ca_amplitude // peak rise magnitude in spine
@@ -27,6 +28,7 @@ CREB_active // bool — structural gene expression enabled
 glutamate_spillover // extrasynaptic [glu] — only high when cleft saturated
 mGluR2_3_activation // presynaptic Gi — autoinhibitory brake
 mGluR5_activation // astrocytic Gq — IP3 → Ca²⁺ → D-serine cascade
+```
 
 ## layer 1 — Ca²⁺: did something happen?