## Tcl8.6.0/Tk8.6.0 Documentation > Tcl/Tk Keywords - O

### Tcl/Tk Applications | Tcl Commands | Tk Commands | [incr Tcl] Package Commands | SQLite Package Commands | TDBC Package Commands | tdbc::mysql Package Commands | tdbc::odbc Package Commands | tdbc::postgres Package Commands | tdbc::sqlite3 Package Commands | Thread Package Commands | Tcl C API | Tk C API | [incr Tcl] Package C API | TDBC Package C API

### A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

object
  class, copy, define, info, my, object, self, body, class, configbody, find, is, itcl, itclextendedclass, itclwidget, local, Class, Method, BindTable, RegisterC
object-oriented
  class, itcl, itclextendedclass, itclwidget
obscure
  lower, raise, Restack
ODBC
  tdbc_odbc
offset
  chan
open
  open
operating system
  platform, platform_shell
operator
  mathop
option
  ttk_widget, colors, cursors, option, ttk_checkbutton, ttk_radiobutton, itcldelegate, itcloption, GetIndex, AddOption, GetOption
option menu
  optionMenu
options
  ParseArgv
order
  lsort
output
  chan, flush, puts, OpenFileChnl
output channels
  console
own
  selection, OwnSelect

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