Numeric expression : less than or equal, greater than or equal

Why do these conditions not exist? We have =, <, and > but not <= or >=. So if I want to check <= I need two rules; < and =.

Please add these numeric conditions and support grouping for AND and OR expressions.

Thanks for taking the time to respond.

I should have been more clear. I'm referring to the WHEN conditions in the RECORD RULES. Current options are is, is not, higher than, lower than, etc. But not <= or >=

Granted I could probably make up another number-equation field that evaluates to (X <= Y ? 'true' : 'false') or whatever but why not simply just offer the <= and >= in the WHEN condition.

You can use the following operators in your equations:

+ adds
- subtracts
* multiples
/ divides
== equals
!= not equals
> greater than
< less than
>= greater than or equal to
<= less than or equal to
& and
| or