MS Excel
When you insert an excel file into a word document. The data are

Embedded
Hyperlinked placed in a word table
Linked
Use the word menu bar and toolbars

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MS Excel
How do you delete a column?

Select the column heading you want to delete and select Insert Delete from the menu
Select the column heading you want to delete and select the Delete Row button on the standard toolbar
Right click the column heading you want to delete and select delete from the shortcut menu
Select the row heading you want to delete and select Edit>Delete from the menu

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