There is no schema. Why do you need it?
I don't know why the OP wants it but I wold love to have them to make some of my tools a little more robust. Even just a simple list of nodes with a line explaining what each is for and what values/childs are allowed for it.
And not just for the
.lpi but for all the XML files Lazarus uses:
.lps, the
.xml's in the config dir, ...
Yea, I know: I'm dreaming