How do I delete multiple lines in nano without affecting the clipboard?

I can select all file by going to the 1st line Alt+\, start marking the text by Alt+A, go to the last line by Alt+/

But there, I don't know which key to remove the selected text. Hit delete doesn't work for me but Ctrl+K to cut the text will destroy my clipboard.

So, what is the hotkey to delete selected text?

nano of course can delete blocks, see this article

1. use CTRL+Shift+6 to mark the beginning of your block
2. move cursor with arrow keys to end of your block, the text will be highlighted.
3. use CTRL+K to cut/delete block.

To paste the block to another place, move cursor to the position and the use CTRL+U. You can paste the block as often as you want to.

nano does not support deleting a block of text, only cutting it (to the server's clipboard).

Instead, if you are using Putty, do the following:

1. Select the text you wish to copy to the clipboard with the mouse first -- this copies it to your local clipboard (i.e. Windows 7 clipboard), which nano can't touch:

   

2. Then, select your block in nano and use Ctrl-K to delete it.

3. Finally, move your cursor to the position where you want to insert the text you copied in Step 1 (you can close nano, open another file, etc. too as long as you don't select another block of text with the mouse). Right-click to paste the copied text at the cursor position.