URL image's addresses:
1st:
⇦ = '0' value
2nd:
⇦ + ⇧ = '1' value
3rd:
⇦ + ⇧ + ⇮ = '2' value
4th:
⇦ + ⇧ + ⇮ + ⇯ = '3' value
Number of active image's sources (minus one):
URL image's addresses:
1st:
⇦ = '0' value
2nd:
⇦ + ⇧ = '1' value
3rd:
⇦ + ⇧ + ⇮ = '2' value
4th:
⇦ + ⇧ + ⇮ + ⇯ = '3' value
Number of active image's sources (minus one):