To type directly with the computer keyboard:

• add the sign = to type a small Katakana; example: : a=, i=, u=, e=, o= & tsu= (or q)
• Type â, î, û, ê, ô for the long vowels or type the underscore _ after the vowel

The characters ヰ (wi) and ヱ (we) are obsoletes. They are replaced by ウィ (ui) and ウェ (ue).

The obsolete charecters yi, ye, we (replaced by i, ie, u) can also be typed using the computer keyboard:
the font BabelStone Han must be installed on the computer to read these characters.