Vi(vim) column editing

In case that you want to edit by column and you use vi(vim) - this will do it.

To use it, press:

* Ctrl + V to go into column mode
* Select the columns and rows where you want to enter your text
* Shift + i to go into insert mode in column mode
* Type in the text you want to enter. You will see changes ONLY into the first row that you edit !
* Esc to apply your change (or alternately Ctrl+c)

You will now see your changed applied.