Incidentally, CX does not show all fare rules (which it should), but you can hack the URL to get the additional ones. The URL ends with &CATEGORY_1=xx&CATEGORY_2=xx, where xx is the fare rule category to be displayed. You can replace each xx with an ATPCO automated rules category code below and the interface will return its content. Note that "LI" doesn't work, but if you enter a category that does not exist for that fare, you will receive a very handy "OPTION LIST" containing the categories present for that fare.
Code:
ATPCO automated rules categories
AC Accompanying travel
AO Add-ons
AP Advance purchase
AD Agent discount
BO Black out dates
CD Children discounts
CT Circle trip combinability
CO Combinability
DA Day time application
DE Deposit
EL Eligibility
EE End on end combinability
FL Flight application
GP Groups
HI Higher intermediate fare
MX Maximum stay
MN Minimum stay
OJ Open jaw combinability
OD Other discounts
PE Penalties
RU Rule application
SR Sales restriction
SE Seasonality
SO Stopovers
SU Surcharges
TE Ticket endorsement
TC Tour conductor discounts
TO Tours
TF Transfers
TR Travel restrictions
VI Visit another country
LI List all restrictions
SR Sales restriction