Where are your test definitions?

Hello,

I would like to explain a sender what he can do to create an email that 
is not classified as spam.

X-Spam-Status: Yes, score=6.248 tagged_above=1 required=5
  tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, 
DKIM_VALID_AU=-0.1,
  DKIM_VALID_EF=-0.1, DMARC_PASS=-0.001, FONT_INVIS_MSGID=2.497,
  FONT_INVIS_NORDNS=1.544, HTML_FONT_TINY_NORDNS=1.514, 
HTML_MESSAGE=0.001,
  RDNS_NONE=0.793, RELAYCOUNTRY_BAD=2, SPF_HELO_NONE=0.001, 
SPF_PASS=-0.001,
  T_KAM_HTML_FONT_INVALID=0.01, T_SCC_BODY_TEXT_LINE=-0.01]

I cannot find the definitions on your old site 
https://spamassassin.apache.org/old/tests_3_1_x.html.
FONT_INVIS_NORDNS, FONT_INVIS_MSGID, HTML_FONT_TINY_NORDNS, RDNS_NONE

Is there no current version of the test definition.