Set the focus to a field on the current screen.
Required. String that contains the name of the field that focus is to be set to.
The field (or other control) name is the name assigned to the field in Newlook Identify.
This function uses a new macro in VF_MACRO.sid, called VF_Macro.VF_Set_Active_Control. So before this function can be used, the latest shipped VF_MACRO.sid must be merged into your Newlook.sid file.