Built-in client vars:
client/var
- authenticate
- bounds
- byond_build
- byond_version
- CGI
- ckey
- color
- command_text
- connection
- control_freak
- computer_id
- default_verb_category
- dir
- edge_limit
- eye
- fps
- gender
- glide_size
- images
- inactivity
- key
- lazy_eye
- mob
- mouse_pointer_icon
- perspective
- pixel_x
- pixel_y
- pixel_w
- pixel_z
- preload_rsc
- screen
- script
- show_map
- show_popup_menus var
- show_verb_panel
- statobj
- statpanel
- tick_lag
- timezone
- verbs
- view
- virtual_eye