First, remove columns
1. Position the cursor to the place of operation.
2.CTRL + v enter "Visual block" mode, select the column number row operation.
3.d deleted.
Second, Insert Column
Insert operation, then knowledge is slightly different. For example, in each row is inserted before the "()":
1. Position the cursor to the place of operation.
2.CTRL + v enter "Visual block" mode, select the column number row operation.
3.SHIFT + i (I) the content of the input to be inserted.
4.ESC Press twice to insert the contents of the selected area will appear in each row