4. System Classes : ListField Class : SelectionType Attribute
 
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SelectionType Attribute
Data Type: integer
4GL Access: RW
This attribute defines the type of selection allowed. The values are the system constants SEL_SINGLE and SEL_MULTIPLE. The default is SEL_SINGLE. For more information, see Set Multiple Selections for List Fields and Table Fields in the Workbench User Guide.
Descriptions of system constant values and their numeric equivalents are listed in Selection Types (see Selection Types).