An example:
%A := 1
%B := 1
IF %A > 0 THEN $PAGETEXT := $PAGETEXT + "A > 0 <br>"
IF %A = 1 AND %B = 1 THEN $PAGETEXT := $PAGETEXT + "A = 1 AND B = 1 <br>"
IF %A = 1 OR %B = 1 THEN $PAGETEXT := $PAGETEXT + "A = 1 OR B = 1 <br>"
IF %A > 0 AND %B = 1 THEN $PAGETEXT := $PAGETEXT + "A > 0 AND B = 1 <br>"
IF %A > 0 OR %B = 1 THEN $PAGETEXT := $PAGETEXT + "A > 0 OR B = 1 <br>"
The output is:
A > 0
A = 1 AND B = 1
A = 1 OR B = 1
The conditions containing both AND,OR and >,< are not executed.