How can I remove a newline character that has already been printed and loaded onto the buffer? As far as I know, the `\b` character only moves the cursor back in the current line, and doesn't work with newline characters. How can I get around this?

***It would be helpful if the question were edited to indicate how this undesirable newline was emitted. – Mahonri Moriancumer***

It is actually not undesirable. I want to preview the user with one state of the buffer, before outputting the other one. I do not however, want to continuously display multiple buffer-states. For instance, say I want to display two matrices,

```
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1

```

and 

```
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0

```

I want the second matrix to replace the first one. To do this, I need to remove the first matrix's outputted numbers.

**Perhaps you might consider editing your question again and indicating the OS and/or terminal type?**

Currently running Linux (Ubuntu) x64, using xterm (ROXTerm to be exact).