## Tcl8.6.2/Tk8.6.2 Documentation > Tcl/Tk Keywords - R

### Tcl/Tk Applications | Tcl Commands | Tk Commands | [incr Tcl] Package Commands | SQLite3 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

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radiobutton
  radiobutton
raise
  raise
raised
  3DBorder
range
  lrange
rc file
  SourceRCFile
read
  fcopy, gets, read, set, trace, GetOpnFl, OpenFileChnl
read-only
  LinkVar
readable
  fileevent
real
  LinkVar
realloc
  Alloc
record
  history, RecEvalObj, RecordEval
recursion
  tailcall, SetRecLmt
redirection
  exec
redisplay
  CanvTkwin, GetImage, ImgChanged
reference count
  Preserve
reference counting
  Object
reflection
  refchan
region
  ttk_Geometry
register
  SetAppName
registry
  registry
regular expression
  lsearch, re_syntax, regexp, regsub, switch, RegExp
relative file name
  filename
release
  GetVersion
relief
  ConfigWidg, GetRelief, SetOptions, ttk_Geometry
remote execution
  dde, send
remove
  unset
rename
  rename, trace
rename files
  file
replace
  lreplace, lset, ListObj
reporting
  bgerror, tkerror
request
  GeomReq, ManageGeom
requested size
  WindowId
require
  PkgRequire
resource
  Limit
resource identifier
  FreeXId, GetPixmap
resource management
  try
restriction
  RestrictEv
result
  return, DString, Eval, Interp, NRE, SaveResult, SetResult
resultset
  tdbc, tdbc_connection, tdbc_resultset, tdbc_statement
retrieve
  option, GetOption
return
  return
return value
  SetResult
reverse
  lreverse, string
ring
  bell
root class
  object
root window
  CoordToWin, GetRootCrd
round
  GetCapStyl, GetJoinStl
rubber sheet
  place

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