This sentence is assigned a relative size of -4
This sentence is assigned a relative size of -3
This sentence is assigned a relative size of -2
This sentence is assigned a relative size of -1

This sentence is using the default base font which is 3

This sentence is assigned a relative size of +1
This sentence is assigned a relative size of +2
This sentence is assigned a relative size of +3
This sentence is assigned a relative size of +4