Here is a list of all functions with links to the files they belong to:

deep_cmp() : common.lua
deep_copy_values() : utils.lua
default_backends() : collision.lua, compute.lua
delegate_base_test() : scoped_test.cpp
demo_start() : colliders.lua, demo0.lua, demo1.lua, font.lua, gamma.lua, list.lua, players.lua
deserialize() : serial.lua
difference() : pil.lua
dirname() : tools.lua
disk() : pil.lua
dismiss() : ui.lua
displayed() : menu.lua
dump_text() : profile.lua
dump_tui() : profile.lua