diff --git a/docs/extras-string/cases.md b/docs/extras-string/cases.md
index 6fc0ee7a..05a6f18c 100644
--- a/docs/extras-string/cases.md
+++ b/docs/extras-string/cases.md
@@ -537,6 +537,7 @@ List(
 ```
 
 ### `Seq[String]` to `KEBAB-UPPER-CASE-STRING`
+
 ```scala mdoc
 List("Abc", "Def").mkKebabUpperCaseString
 
@@ -573,6 +574,7 @@ List(
 ```
 
 ### `Seq[String]` to `kebab-lower-case-string`
+
 ```scala mdoc
 List("Abc", "Def").mkKebabLowerCaseString
 
@@ -607,3 +609,17 @@ List(
   "Snow-Moon  Hike__Play--Jump  Calm--__Kind   Warm __-- Cool"
 ).mkKebabLowerCaseString
 ```
+
+## Split `String` by `PascalCase` or `cacmelCase`
+
+You can split a `String` value by PascalCase or camelCase.
+
+e.g.)
+
+```scala mdoc
+"StarBirdGlowWaveLeafBookWindSandRainFireSnowMoonHikePlayJumpCalmKindWarmSoftCool".splitByCase
+```
+
+```scala mdoc
+"starBirdGlowWaveLeafBookWindSandRainFireSnowMoonHikePlayJumpCalmKindWarmSoftCool".splitByCase
+```