User:Vero/My sandbox

This is how you bold text using the B key.

or using syntax you can bold like this.

This is how you italic using the I key.

or using syntax you can italic this way.

Now for the headings:

biology

human biology

anatomy and physiology

1. introduction
2. skin
3. musculoskeletal
   • skeletal system
   • muscular system
4. nervous system
   • peripheral nervous system
   • central nervous system