diff --git a/docs/ppl-lang/planning/ppl-between.md b/docs/ppl-lang/planning/ppl-between.md
index df68f4086..6c8e300e8 100644
--- a/docs/ppl-lang/planning/ppl-between.md
+++ b/docs/ppl-lang/planning/ppl-between.md
@@ -3,11 +3,8 @@
 1. **Proposed syntax**
     - `... | where expr1 [NOT] BETWEEN expr2 AND expr3`
         - evaluate if expr1 is [not] in between expr2 and expr3 
-    - `... | where a between 1 and 4`
-    - `... | where b not between '2024-09-10' and '2025-09-10'`
-
-2. **Proposed impl**
-    - forward to sparks built-in function of between 
+    - `... | where a between 1 and 4` - Note: This returns a >= 1 and a <= 4, i.e. [1, 4]
+    - `... | where b not between '2024-09-10' and '2025-09-10'` - Note: This returns b >= '2024-09-10' and b <= '2025-09-10'
 
 ### New syntax definition in ANTLR