Polishing documentation

CLC-qthing/SiliconTorch/NVSExplorer.md

@@ -54,7 +54,8 @@ In the following list, `argument` stands for the message content received on the
 - `get_type` - **get type of key**  
   request: `REQUEST/get_type/NS/KEY`  
   response: `RESPONSE/get_type/NS/KEY`  
-  description: reads the type and converts it to `string`; returns `void` in case of non-existing `key`
+  description: reads the type and converts it to `string`; returns `void` in case of non-existing `key`  
+    possible return values: `u8`, `u16`, `u32`, `u64`, `i8`, `i16`, `i32`, `i64`, `str`, `blob`, `any`, `void`
 
 - `get_raw` - **get generic value**  
   request: `REQUEST/get_raw/NS/KEY`  
@@ -83,6 +84,16 @@ In the following list, `argument` stands for the message content received on the
   argument: the value to set
   description: converts the message from `string` to `int` and writes it into the `key`; the value is capped to the bounds of the specified type, e.g. `[0, 128]` in case of `set_u8`
 
+- `get_str` - **get string value**  
+  request: `REQUEST/get_str/NS/KEY`  
+  response: `RESPONSE/get_str/NS/KEY`  
+  description: returns the stored `string` value
+
+- `get_strlen` - **get string length**  
+  request: `REQUEST/get_strlen/NS/KEY`  
+  response: `RESPONSE/get_strlen/NS/KEY`  
+  description: returns the length of a stored `string` value
+
 
 
 ### Types