much more readable once you indent it
Code:
X=0
If Y > 10 then
X=5
Else
If Y < 20 then
X=7
Else
X=9
when using a language that uses closing blocks for
if it will be even more readable
Code:
X=0
If Y > 10 then
X=5
Else
If Y < 20 then
X=7
Else
X=9
Endif
Endif