I have a line of text that wraps onto the next line, say something longer than 78 characters or so. I would like some sort of macro (or feature?!

[normal wordwrap, wrapped to X-chars wide]
This is a sample paragraph that is traditionally wordwrapped
to be flush with the left side of the first line.
[reverse indented, wrapped to X-chars wide, indented 5 spaces]
This is another sample paragraph of how I would like Textpad
to wrap my lines, so that every subsequent line, but not
the first is indented a specified number of spaces.
I realise that I could simply place a hard carriage return and indent the next line with 'Maintain Indent' enabled. But when you're faced with 100+ lines of text to reverse indent, it is not as easy or quick!
I would think that something like this could be done with a Macro... can anyone help? Even more, it would be awfully nice if TextPad had it built in as a feature!