- Unix.LargeFile
- Unix::AliasFile
- Unix::AutomountFile
- Unix::ConfigFile
- Unix::GroupFile
- Unix::Mknod
- Unix::PasswdFile
- Unix::Syslog
- unix_telnet
- unknown
- unload
- unload_datafile
- unload_datafile_object
- unlockpt
- unmarkbddnode
- unmocked
- UnNamedObj
- unpackDouble2x32
- unpackHalf2x16
- unpackUnorm2x16
- unparse_time
- unparse_time_approx
- unpost_form
- unpost_menu
- unscare_mouse
- unselect_palette
- unset
- unsetbddrefext
- unstack
- untouchwin
- unvis
- unw_create_addr_space
- unw_destroy_addr_space
- unw_flush_cache
- unw_getcontext
- unw_get_accessors
- unw_get_fpreg
- unw_get_proc_info
- unw_get_proc_info_by_ip
- unw_get_proc_name
- unw_get_reg
- unw_init_local
- unw_init_remote
- unw_is_fpreg
- unw_is_signal_frame
- unw_regname
- unw_resume
- unw_set_caching_policy
- unw_set_fpreg
- unw_set_reg
- unw_step
- uoffset
- UP
- update
- update_dialog
- update_menu
- Updating_a_Document
- updwtmp
- uplevel
- upsample
- upsclient
- upscli_add_host_cert
- upscli_cleanup
- upscli_connect
- upscli_disconnect
- upscli_fd
- upscli_get
- upscli_init
- upscli_list_next
- upscli_list_start
MAN (3)
Library functions, covering in particular the C standard library