Wave documentation doesn't mention signed/unsigned requirements

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-12-14.07:03:20.776>
labels = ['type-feature', '3.10', 'docs']
title = "Wave documentation doesn't mention signed/unsigned requirements"
updated_at = <Date 2020-12-18.23:45:56.507>
user = 'https://bugs.python.org/mattgwwalker'

bugs.python.org fields:

activity = <Date 2020-12-18.23:45:56.507>
actor = 'terry.reedy'
assignee = 'docs@python'
closed = False
closed_date = None
closer = None
components = ['Documentation']
creation = <Date 2020-12-14.07:03:20.776>
creator = 'mattgwwalker'
dependencies = []
files = []
hgrepos = []
issue_num = 42633
keywords = []
message_count = 2.0
messages = ['382957', '383332']
nosy_count = 3.0
nosy_names = ['terry.reedy', 'docs@python', 'mattgwwalker']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue42633'
versions = ['Python 3.10']