call "CBL_TOLOWER" using      string
                   by value length
                   returning status-code 
               	 | Using call prototype (see Key) | Picture | |
|---|---|---|
| string | pic x(n). | pic x(n). | 
| length | cblt-os-size | pic x(4) comp-5 or pic x(8) comp-5 (64-bit native programs only) | 
| status-code | See Library Routines - Key | 
| string | The string to convert. | 
| length | The number of bytes of string to change; positions beyond this are unchanged. | 
| string | The converted string. | 
Comments:
The routine starts at the left-hand end of string and converts letters to lower case (also called folding to lower case).