The front and back of the banknotes have figures formed by lines of varying thickness and with varying spaces between them. Like the rest of the note, these are printed with lines and not dots. Thus, the images give their color to the note.

EXAMPLES
Denomination	Front	Back
20 pesos
50 pesos
100 pesos
200 pesos
500 pesos
1000 pesos

To better observe these security features, you should use a magnifying glass.