How to enter promote sound when edit sth. with PC

     Two solutions :)
1) you can enter double of your first letter.
   If you want to enter つかった
Enter double letter of yours "tt or else"

2) You can enter 'x' before your Hiragana.
   like "xtu" is っ，　”xya” is ゃ。
 I love the second way. you can choose yours :)