You can determine the current value of a variable. It is automatically entered as default entry in mask fields by DataView if users insert new records. To do so, you enter the macro @default (default means variable name) in the Default Value field of the field master or in the Default Value-M of the mask-field-default relation. Please take care of matching types of variable type and field type. In case of user-specific value assignment of variables the field will get default values irrespective of the current user.
In addition to determining application-specific variables you can use the same method to determine the current user, the current group or the current date using @USER, @GROUP and @TODAY.