Vector Markup Language MHT). Such files retain complete vector information, and can be reopened for editing using other Microsoft applications, such as Microsoft PowerPoint. VML was natively supported by Microsoft's Internet Explorer up to version 9 inline within HTML, using an undefined version of SGML namespaces. Support for VML was dropped in Internet Explorer 10 and subsequent versions. Support for "ink annotations" in Office Open XML files was added to LibreOffice during the 3.7 development cycle. VML is not natively supported by most web browsers. Web browsers such as Mozilla Firefox, Opera, Safari or Google Chrome support SVG instead of VML. Though VML
Kerning some complex typesetting functions that may be hard to implement through plug-ins (kerning in particular) may be relatively easy to implement through separate tools. The CSS property codice_1 enables kerning in Firefox, Chrome, Safari, Opera, and the Android Browser. There is also a proposed CSS3 property codice_2, but it is only supported in Firefox (prefixed with codice_3), Chrome and Opera (prefixed with codice_4 in both) and in Internet Explorer starting at version 10. The CSS3 draft suggests that kerning should always be enabled for OpenType fonts. The human perception of kerning can vary with the intraword and interword spacing during