COMMON VIETNAMESE INPUT METHODS

Accents vs. Vowels Dấu với nguyên âm	Telex Input Method Cách gõ Telex	VNI Input Method Cách gõ VNI	VIQR Input Method Cách gõ VIQR
a circumflex - â	aa	a6	a^
e circumflex - ê	ee	e6	e^
o circumflex  - ô	oo	o6	o^
a breve - ă	aw	a8	a(
o horn - ơ	ow	o7	o+
u horn - ư	uw	u7	u+
d stroke - đ	dd	d9	dd
acute - sắc	s	1	'
grave - huyền	f	2	`
dot below - nặng	j	5	.
hook above - hỏi	r	3	?
tilde - ngã	x	4	~
remove diacritics - xóa dấu	z	0	-
Example - Ví dụ: Vietnamese - Tiếng Việt	Vis duj: Tieesng Vieejt	Vi1 du5: Tie61ng Vie65t	Vi' du.: Tie^'ng Vie^.t

The keys designated as diacritical marks are to be typed immediately after the vowel they qualify. To type those keys literally, i.e., without combining them with the preceding vowel, type the escape character, defined to be the back slash key (\), right before entering those keys. For example, while Viet Mode is on with VNI Input Method selected, if you want to type the character sequence a1, enter a\1 — the escape character (\) will prevent character a and character 1 from combining into character á.
Most Vietnamese keyboard drivers also support some sort of smart input, which allows entry of diacritical marks at the end of the word. The driver, through some intelligent algorithm, will place the marks on the appropriate characters within the word. This automatic marking results in faster typing for users.