Select: tree view with tree lines
Metals
Alkaline Metals
Lithium
Li
Sodium
Na
Potassium
K
Transition Metals
Scandium
Sc
Titanium
Ti
Vanadium
V
Halogens
Fluorine
F
Chlorine
Cl
Bromine
Br
Simple list with tree lines:
LTR:
First
Second
(spans two lines)
Third
Fourth
RTL:
First
Second
(spans two lines)
Third
Fourth