Reading documentaion offline?

[Parrot Raiser]

What's the simplest way of downloading current language documentation
for reading offline?

Best practices?

[Parrot Raiser]

What would be the criteria for deciding whether to name P6 constants
using  lower-case or UPPER_CASE names?

Generally,  system constants and variables use upper-case, so
lower-case keeps user variables in a separate name space. Do
user-defined constants belong there, or in upper-case to indicate that
they are global?

Apologies in advance if this starts a vicious ideological conflict.