RE: Any way to remove ^L or ^M from some buffer outputs?

[Drew Adams]

> > > Use `query-replace' (`M-%') or `M-x replace-string'
> >
> > But this assumes the buffer is editable ... besides
> > there should be a command (onee) that toggles the
> > visibility of that specific kind of representation,
> > whatever it is called, for _all_ such chars...
> 
> It is in read-only buffers, 

If you want to edit a read-only buffer, toggle it
to writable with `C-x C-q'.

If it's a file buffer and you don't have write
permission for the file, then you likely won't be
able to write the updated buffer back to the file.
But that's a different problem from being able to
edit the buffer.

> I was just thinking there is option to
> remove that as it looks as garbiage.

Garbage/noise is in the eye of the beholder.