What is the manued 真鵺道（まぬえど）

There is discussion about change of texts in this WWW page. There is convinient way to express this. Please refer YAMAUCHI Hitoshi's Manued Page for details.

[A/B]

This meaning is ‘delete A, insert B’ If A is null, This means insertion. If B is null, it means deletion.

and the Westmarch added to the Shire in S.R. 14[6/5]2.

means

and the Westmarch added to the Shire in S.R. 1462.

is changed to

and the Westmarch added to the Shire in S.R. 1452.