Context menu in the header

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

Duplicar coluna	Duplicated the column under the cursor.
Duplicar colunas selecionadas	Duplicates the selected column.
Inserir coluna vazia à esquerda	Adds an empty row at the left of the clicked column.
Inserir coluna vazia à direita	Adds an empty row at the right of the clicked column.
Eliminar coluna	Deletes the column at the cursor position.
Eliminar colunas selecionadas	Deletes all the selected columns.