diff --git a/core-spec/expression_language.md b/core-spec/expression_language.md
index a673fdcc..dd8f121f 100644
--- a/core-spec/expression_language.md
+++ b/core-spec/expression_language.md
@@ -813,10 +813,10 @@ date range. For a row-level shift, add a number of days to the date directly, or
 
 | Ossie Standard | Tableau | Looker Studio | DAX | Sigma |
 | :---- | :---- | :---- | :---- | :---- |
-| `CASE WHEN...` | `CASE WHEN...` or `IF...` | `CASE WHEN...` | `SWITCH(TRUE(), ...)` | Only 3-argument `If(cond, t, f)`; no native multi-branch `CASE` |
+| `CASE WHEN...` | `CASE WHEN...` or `IF...` | `CASE WHEN...` | `SWITCH(TRUE(), ...)` | `If(c1, v1, c2, v2, ..., else)` (variadic; else is optional and defaults to Null) |
 | `IF(cond, t, f)` | `IF cond THEN t ELSE f END` | N/A (use CASE) | `IF(cond, t, f)` | `If(cond, t, f)` |
 | `COALESCE(a, b)` | `IFNULL(a, b)` or `ZN(a)` | `COALESCE(...)` | `COALESCE(a, b)` | `IfNull(a, b)` (2-argument only) |
-| `NULLIF(a, b)` | `IF a = b THEN NULL ELSE a END` | N/A | `IF(a = b, BLANK(), a)` | `If(a = b, Null(), a)` |
+| `NULLIF(a, b)` | `IF a = b THEN NULL ELSE a END` | N/A | `IF(a = b, BLANK(), a)` | `NullIf(a, b)` |
 
 ### Window Function Mapping