What is a "PI marker" or "programming instruction marker"

[Writer]

> [By way of some background: We're in an odd spot where we're between

> budgets AND about to shift to 'native' DITA using oXygen; so they're
> trying hard not to invest further in Frame-specific products. But this
> requirement for Help (in am month!) is gonna mean one last tool goes in
> that box.]


Can't you output to CHM using oXygen?

Nadine