[SR-Users] $ru vs. $fu as r/w pseudo variables

[Juha Heinanen]

Juha Heinanen writes:

> > Should be the same for To header.
> 
> But those are not currently marked as "R/W" variables.

I looked at pv_core.c, and based on that these are header R/W variables:

$tu, $tU, $td, $tn, $fu, $fU, $fd, $fn

-- Juha