Context menu in the header

Make the following settings in the context menu of the header of the editing area:

Duplicar columna	Duplicated the column under the cursor.
Duplicar columnas seleccionadas	Duplicates the selected column.
Insertar columna vacía a la izquierda	Adds an empty row at the left of the clicked column.
Insertar columna vacía a la derecha	Adds an empty row at the right of the clicked column.
Eliminar columna	Deletes the column at the cursor position.
Eliminar columnas seleccionadas	Deletes all the selected columns.