Selection Filter hook

Use this hook to specify the query extension to filter the records that are shown in the zoom session.

Example:

function extern void tcibd001.cdf_colr.selection.filter()
{
        on case tcibd001.citg
        case "001":
                query.extend.where.in.zoom("txcom100.ctyp = txctyp.hard")
                break
        case "002":
                query.extend.where.in.zoom("txcom100.ctyp = txctyp.soft")
                break
        default:
                |* no filter
        endcase
}