VIQR is primarily used as a Vietnamese
input method in software that supports
Unicode. Similar input methods include
Telex and
VNI. Input method editors such as
VPSKeys convert VIQR sequences to Unicode
precomposed characters as one types, typically allowing modifier keys to be input after all the base letters of each word. However, in the absence of input method software or Unicode support, VIQR can still be input using a standard keyboard and read as plain ASCII text without suffering from
mojibake. Unlike the
VISCII and
VPS code pages, VIQR is rarely used as a character encoding. While VIQR is registered with the
Internet Assigned Numbers Authority as a
MIME charset, MIME-compliant software is not required to support it. Nevertheless, the Mozilla Vietnamese Enabling Project once produced builds of the open source version of
Netscape Communicator, as well as its successor, the
Mozilla Application Suite, that were capable of decoding VIQR-encoded webpages, e-mails, and newsgroup messages. In these unofficial builds, a "VIQR" option appears in the Edit | Character Set menu, alongside the VISCII,
TCVN 5712, VPS, and
Windows-1258 options that remained available for several years in
Mozilla Firefox and
Thunderbird. == History ==