".ecnf" is "Environment CoNFig" file such as ".env" file. .env is simple key-value store. So .enc cannot treat "key = {key = value}" and "key="(value is null). It is not useful. .ecnf is my original formatting file. .ecnf can treat them which .env cannot treat. .ecnf has following format.
```
ONLYUPPERSTART :
EMPTY: ""
NOT_EMPTY :"value"
ZERO : { FIRST : "" SECOND: { THIRD: "日本語" } FOURTH : }
SUCCESS: { }
```
``` rust: example.rs // init let mut loader = ECnfLoader::new();
// load: self.from
let ecnf: HashMap