I see a lot current forward on datasheet, but I don´t know the difference from the "normal" current.

**EDIT**

On this [datasheet](https://www.mouser.com/datasheet/2/143/EVER_S_A0003168083_1-2548483.pdf) ([datasheet](http://www.everlight.com/datasheets/IR333_H0_L10_datasheet.pdf)), I saw a If (current forward) of 100mA and then on page 3 it states about current of 20mA. So, my question was about the difference of this two current.