:   '''[option] readfile''' ''filename'' ?''priority''?

Loads the options from resource file ''filename'' in with priority ''priority'' (or '''interactive''' if ''priority'' is omitted, just as with [option add]). The resource file should be in .Xdefaults format (though the '''?''' pattern separator is not supported).

**Example**
Usage:
======
option readfile [file join [file dirname [info script]] "myapp.defs"]
======
Sample resource file:
======none
! This is a comment
*Label.font: Helvetica 24
*Button.background: green
*MyDialog.abc.def.foreground: red
======
The patterns are separated from the values, one per line, by a `:`. Patterns for use by an application (e.g., your script) usually either start with a `*` or with the class name of the application (set by the `-class` option to [wish]). They could also use the name of the application (`-name` option to [wish]) but that's rare because it isn't guaranteed to be used exactly (as it is set to something unique per X display). Most of the time, files loaded with '''option readfile''' can use `*` just fine.
**See Also**
   * https://wiki.archlinux.org/index.php/x_resources
<<categories>>Command