diff --git a/poc/poc.yml b/poc/poc.yml
index 83e7cf7..c6f23c4 100644
--- a/poc/poc.yml
+++ b/poc/poc.yml
@@ -24,7 +24,7 @@ channels:
       (3deff)
       (deff)
       [ffe]
-      {1-cos((PI*x)/2),acced}
+      {l 1-cos((PI*x)/2),acced}
       abbc!o5cc!v15feed!l4fedd!t60hdd
       # rest: .
       # pizz.: '°
@@ -33,7 +33,12 @@ channels:
       # octave: ><
       # comment?: ;,
       # start here: ':'
-      # glissando: {EXPR, score}
+      # slope: {MODIFIER EXPR, score}
+      #   note modifier prefix: n
+      #   volume modifier prefix: v
+      #   octave modifier prefix: o
+      #   length modifier prefix: l
+      #   tempo modifier prefix: t
       # loop: ()
       # loop with count: (COUNT, score)
       # tuple: []