OpenWGA 7.4 - WebTML reference
WebTML tags » input<tml:input multiple ="true | false">
Purpose:
Specifies if the input should allow multiple values
Description:
This attribute is usable on types "select" and "textarea".
Setting it to "true" on type "select" it will allow multiple selections in the select control.
Setting it to "true" on type "textarea" it will let WebTML interpret each text line as a single value. So the WebTML form will store a list of strings, consisting of the the textarea lines.
Default value:
false