Extension font family

Designed by Les Usherwood in 1993
Leslie Usherwood


Desktop fonts are designed to be installed on a computer for use with applications. Licensed per computer.
Web fonts are used with the CSS @font-face rule. They are licensed for a set number of page views with no time limitation.
Mobile App Fonts can be embedded in your mobile application. Each app requires a separate license. The license is based on the number of app installations.
Electronic Publication Fonts can be embedded in an eBook, eMagazine or eNewspaper. Fonts are licensed per issue.
Server fonts can be installed on a server and e.g. used by automated processes to create items. A license is per server core CPU per year.

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Std / OT CFF

supports at least

21 languages.

Technical details
Digital data from:
OpenType outline flavour:
CFF - PostScript-Outlines
Technical font names:
File name: Etw_____.otf
Windows menu name: ExtensionRR Book
PostScript name: ExtensionRR-Book
PostScript full name: ExtensionRR Book
Catalog number:
US$ 45
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Tag: kern

Function: Adjusts amount of space between glyphs, generally to provide optically consistent spacing between glyphs. Although a well-designed typeface has consistent inter-glyph spacing overall, some glyph combinations require adjustment for improved legibility. Besides standard adjustment in the horizontal direction, this feature can supply size-dependent kerning data via device tables, "cross-stream" kerning in the Y text direction, and adjustment of glyph placement independent of the advance adjustment. Note that this feature may apply to runs of more than two glyphs, and would not be used in monospaced fonts. Also note that this feature does not apply to text set vertically. The o is shifted closer to the T in the combination "To."

These fonts support the Basic Latin character set. Each font is Unicode™ encoded, and available in d

Tag: Basic Latin

Function: These fonts support the Basic Latin character set. Each font is Unicode™ encoded, and available in different formats. Please review the product information for each font to ensure it will meet your requirements.