As a part of #1, it will be helpful to identify and dereference pronouns in the Plotto text, to assist in modifying character sexes.

The Plotto text, as received, is very much a product of its time. Although most of the conflicts and situations described are timeless, there is also a fair share of trick bicycle riders, proud old Southern families impoverished in fortune, and 1920's-style racism and sexism. It would be a boon to anyone desiring to use it to have a more anodyne edition that can be applied to any time or setting.

Could you add a LICENSE file in the repo to clarify under what terms people can re-use it?
Looking forward to be able to leverage it. Thanks!

There are two kinds of characters transformations in lead-ons/ carry-ons in Plotto.
You can find both kinds on the lead-ons of clause 1310.
One is of the form "647 ch A-5 to A", where character A-5 on 647 is switched with A. (A-5 > A)
The other kind, as in the last lead-on, is of the form "818a tr A & A-4" where character A is transposed with character A-4, that is, A is switched with A-4 and A-4 is switched with A. (A-4 <> A)
On the Plotto XML both are tagged the same. That is, the latter contains only
<transform from="A" to="A-4"></transform>
for the transformation.

As I see it, either the transpositions should have a special tag, such as
<transpose between="A" and="A-4"></transpose>
OR
two tags should be used to reflect the bidirectionality

<transform from="A" to="A-4"></transform>
<transform from="A-4" to="A"></transform>

(Otherwise great encoding!)