The markdown help states
Available conditionals are
gt
,gte
,lt
,lte
,eq
, andneq
.
<!-- if version [eq C++03] -->
eq
equal to<!-- end version if -->
<!-- if version [neq C++03] -->
neq
not equal to<!-- end version if -->
<!-- if version [gt C++03] -->
gt
greater than<!-- end version if -->
<!-- if version [gte C++03] -->
gte
greater than equal<!-- end version if -->
<!-- if version [lt C++03] -->
lt
less than<!-- end version if -->
<!-- if version [lte C++03] -->
lte
less than equal<!-- end version if -->