Tk_AddOption - Add an option to the option database

       Tk_Window tkwin (in)                      Token for window.

       const char *name (in)                     Multi-element name of option.

       const char *value (in)                    Value of option.

       const char *dbName (in)                   The option database name.

       const char *className (in)                The name of the option class.

       int priority (in)                         Overall priority level to use for option.
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Tk_AddOption  is  invoked  to  add  an  option to the database associated with tkwin's main window.  Name
       contains the option being specified and consists of names and/or classes separated by asterisks or  dots,
       in  the  usual  X  format.   Value  contains  the  text string to associate with name; this value will be
       returned in calls to Tk_GetOption.  Priority specifies the  priority  of  the  value;  when  options  are
       queried  using Tk_GetOption, the value with the highest priority is returned.  Priority must be between 0
       and TK_MAX_PRIO (100).  Some common priority values are:

       TK_WIDGET_DEFAULT_PRIO
                           Used for default values hard-coded into widgets.

       TK_STARTUP_FILE_PRIO                    Used for options specified in application-specific startup files.

       TK_USER_DEFAULT_PRIO                                        Used for options specified  in  user-specific
                                                                   defaults  files, such as .Xdefaults, resource
                                                                   databases loaded into the X server, or  user-
                                                                   specific startup files.

       TK_INTERACTIVE_PRIO                                                             Used      for     options
                                                                                       specified   interactively
                                                                                       after   the   application
                                                                                       starts running.

       Tk_GetSystemDefault returns a Tcl_Obj* with the string identifying a configuration  option  matching  the
       given dbname and className.  Returns NULL if there are no system defaults that match this pair.

       class, name, option, add

Tk                                                                                             Tk_AddOption(3tk)

       Tk_AddOption - Add an option to the option database

#include<tk.h>

       void
       Tk_AddOption(tkwin,name,value,priority)

       Tcl_Obj *
       Tk_GetSystemDefault(tkwin,dbName,className)