[chj]

Isn't it the way perl scripts write their documentation? I don't know what makes it good for personal knowledge systems from reading the introduction

[apgwoz]

Perl's POD, yes. But you're right! The spec authors are Perl folx, and this is clearly derivative. What's kind of interesting is that POD stands for "Plain Old Documentation" and then there's a "lite" version of it... so "lite-r Plain Old Documentation" --- I don't see a clear summary of the differences, though.