The name of the column.
The name of the column is determined as follows:
|1.||If the column is linked to a field in a data server, then the field name is returned.|
|2.||If for the column a HyperLabel is defined, then the value of the access HyperLabel:NameSym is returned.|
|3.||If for the column a FieldSpec is defined, then the value of the access FieldSpec:HyperLabel:NameSym is returned.|
|4.||If for the column a caption as string is defined, then the caption as symbol is returned.|