Documentation/ and indexing of #| and #= (and how to remember/understand which one is which)

[AlexDaniel]

We do have some docs here: https://docs.perl6.org/language/pod#Declarator_blocks

But I find the explanation in old design docs a bit better and more comprehensive: http://design.perl6.org/S26.html#Declarator_blocks

Also, #| and #= are not indexed/searchable.

And here is an explanation on why | and #: http://colabti.org/irclogger/irclogger_log/perl6?date=2018-09-11#l546