diff --git a/wfassoc/src/lowlevel.rs b/wfassoc/src/lowlevel.rs
index 7efabc9..58157d0 100644
--- a/wfassoc/src/lowlevel.rs
+++ b/wfassoc/src/lowlevel.rs
@@ -85,7 +85,7 @@ impl TryFrom<View> for Scope {
 
 // endregion
 
-// region: Losse and Variant Structs
+// region: Exposed Structs (Losse, Variant and others)
 
 // region: Losse ProgId
 
@@ -132,7 +132,7 @@ impl From<concept::ProgId> for LosseProgId {
 // region: Icon Resource Variant
 
 /// The enum representing a losse Icon Reference String.
-/// 
+///
 /// In real usage, programmer can use Icon Reference String,
 /// or a plain string pointing to a icon file as the icon setting value.
 /// This enum is designed for handling this scenario.
@@ -184,7 +184,7 @@ impl From<concept::IconRefStr> for IconResVariant {
 // region: String Resource Variant
 
 /// The enum representing a losse String Reference String.
-/// 
+///
 /// In real usage, programmer can use String Reference String,
 /// or a plain string as the string setting value.
 /// This enum is designed for handling this scenario.
@@ -203,7 +203,7 @@ impl StrResVariant {
             StrResVariant::RefStr(v) => {
                 let rc = concept::StrRc::new(v.get_path(), v.get_index())?;
                 rc.into_string()
-            },
+            }
         };
         Ok(rv)
     }
@@ -238,6 +238,31 @@ impl From<concept::StrRefStr> for StrResVariant {
 
 // endregion
 
+// region: Shell Verb
+
+/// The struct representing a shell verb pair.
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct ShellVerb {
+    verb: concept::Verb,
+    command: concept::CmdLine,
+}
+
+impl ShellVerb {
+    pub fn new(verb: concept::Verb, command: concept::CmdLine) -> Self {
+        Self { verb, command }
+    }
+
+    pub fn get_verb(&self) -> &concept::Verb {
+        &self.verb
+    }
+
+    pub fn get_command(&self) -> &concept::CmdLine {
+        &self.command
+    }
+}
+
+// endregion
+
 // endregion
 
 // region: Utilities
@@ -568,15 +593,11 @@ impl ApplicationsKey {
     // We temporarily use String and &str as the command line argument parameter.
     // We may introduce a new complete Rust struct for replacing this arbitrary string.
 
-    pub fn get_shell_verb(&self, view: View) -> Result<(concept::Verb, String), Error> {
+    pub fn get_shell_verb(&self, view: View) -> Result<ShellVerb, Error> {
         todo!()
     }
 
-    pub fn set_shell_verb(
-        &mut self,
-        scope: Scope,
-        beh: (concept::Verb, &str),
-    ) -> Result<(), Error> {
+    pub fn set_shell_verb(&mut self, scope: Scope, sv: &ShellVerb) -> Result<(), Error> {
         todo!()
     }
 
@@ -586,7 +607,11 @@ impl ApplicationsKey {
         todo!()
     }
 
-    pub fn set_default_icon(&self, scope: Scope, icon: Option<&IconResVariant>) -> Result<(), Error> {
+    pub fn set_default_icon(
+        &self,
+        scope: Scope,
+        icon: Option<&IconResVariant>,
+    ) -> Result<(), Error> {
         todo!()
     }
 
@@ -596,7 +621,11 @@ impl ApplicationsKey {
         todo!()
     }
 
-    pub fn set_friendly_app_name(&self, scope: Scope, name: Option<&StrResVariant>) -> Result<(), Error> {
+    pub fn set_friendly_app_name(
+        &self,
+        scope: Scope,
+        name: Option<&StrResVariant>,
+    ) -> Result<(), Error> {
         todo!()
     }
 
@@ -606,7 +635,11 @@ impl ApplicationsKey {
         todo!()
     }
 
-    pub fn set_supported_types(&self, scope: Scope, tys: Option<&[concept::Ext]>) -> Result<(), Error> {
+    pub fn set_supported_types(
+        &self,
+        scope: Scope,
+        tys: Option<&[concept::Ext]>,
+    ) -> Result<(), Error> {
         todo!()
     }