The VL format specification indicates that string data is to be converted to lowercase upon keyboard input. It can be used with INPUT FIELDS and RINPUT FIELDS processing. (PRINT FIELDS accepts it and treats it the same as V. If it is specified with FORM, error code 1006 will be generated.)
- Input characteristics
When VL is used with input of string data, case conversion automatically occurs as the characters are being typed in. Even if the operator attempts to type uppercase letters, only lowercase letters will appear on the screen. Characters other than the letters A-Z are not affected. Also, data that is already displayed is not changed -on the screen or internally -by a VL specification.
The following example will convert all letters entered to lowercase:
00100 INPUT FIELDS "1,40,VL 10,r": X$
- Output characteristics
When VL is used for output in PRINT FIELDS or INPUT FIELDS statements, it is treated the same as V. VL cannot be used for either input or output in a FORM statement.
The letter L can also be used as a Control Attribute.