#....
use Cwd;
use File::Spec::Functions ':ALL';
use File::HomeDir    ();
use File::UserConfig ();
use File::Basename   ();
use Config::General  ();
use YAML::Tiny       ();

our $basedir;
BEGIN{
    $basedir = rel2abs( File::Basename::dirname( __FILE__ ) );
}

use Wx;                            # Core wxWidgets Framework
use Wx::STC;                       # Scintilla editor component
#....