> For the complete documentation index, see [llms.txt](https://chaoses-ib.gitbook.io/directory-opus/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://chaoses-ib.gitbook.io/directory-opus/manual/reference/evaluator/islower.md).

# IsLower

\<evalcmd> IsLower && bool && **True** if *string* consists only of lowercase letters. && string && string && String to test. \</evalcmd>

Returns **True** if *string* consists entirely of lowercase letters, otherwise returns **False**.

//<Example://>

```
Output(IsLower("abcde"))
--> true

Output(IsLower("abCde"))
--> false
```

*See also:*\
[isalpha](/directory-opus/manual/reference/evaluator/isalpha.md)\
[isdigit](/directory-opus/manual/reference/evaluator/isdigit.md)\
[ispunct](/directory-opus/manual/reference/evaluator/ispunct.md)\
[isspace](/directory-opus/manual/reference/evaluator/isspace.md)\
[isupper](/directory-opus/manual/reference/evaluator/isupper.md)