[TxMt] help with workaround with known bug

[Oliver Taylor]

> 1.  When triggered the macro looks backwards from
> the cursor position for lines beginning with four tabs?

Yes. Specifically, four tabs followed by a letter, number or punctuation mark.

> 2.  The first such line is skipped and the second such
> line inserted where the cursor is.

Two lines down from where the cursor is, yes.

> What is supposed to happen if there is only one such line
> in the document. (I know it crashes, but what is it suppose
> to do?)

Just insert the cursor in the expected position (two lines down and
four tabs in) with no text.