Arial was originally known as Sonoran Sans Serif and became to be known as Arial after its inclusion in Windows by Microsoft. Versions 2.76 and later include Arabic (on non italic fonts) and Hebrew glyphs. Versions 5.00 support Latin C, Latin D, Greek Extended, Cyrillic supplement and Coptic characters. Monotype currently owns the copyright for the Arial font.
Helvetica was designed in 1957 by Swiss typeface designer Max Miedinger and Eduard Hoffmannas. It was a new sans serif typeface that could compete with Akzidenz-Grotesk in the Swiss market. Created based on Schelter-Grotesk it was originally known as Die Neue Haas Grotesk. Helvetica was a neutral typeface that had clarity and no intrinsic meaning in its form.
An example of this font style is found in the IBM Sonoran Pi Sans Serif family. This IBM Subclass is not directly reflected in the 12/87 ISO/IEC 9541-5 draft standard, though it is indirectly by the ISO Sans Serif Class and Gothic Subclass (implies that all characters of the font exhibit the design appearance, while only a subset of the. Apr 04, 2011 Microsoft introduced Arial as the default font with Windows 3.1 (in 1992), not Windows 7.1. The typeface is available for purchase from Fonts.com (as Arial), and has been for years. Fun fact: the background on our Sonoran title graphic comes from a blurred Windows 7 screenshot.
Helvetica and Arial share many similar characters but some characters are different. The x- height of both Arial and Helvetica are same, which is why they are often confused for each other. The Differences lie in small details.
The a in Helvetica has a tail while Arial does not. The bowl of 'a' flows back into the stem like 's' in Helvetica, where as the bowl is intersected with a slight curve in Arial.
The top of 't' is cut off at angles in Arial whereas in Helvetica 't' has straight cuts. The end strokes of 'S' and 'C' are horizontal in Helvetica while in Arial they are at an angle.
'G' in Arial has no spur at bottom and curve meets the stem at an angle. The 'G' in Helvetica has a spur at bottom of stem and the curve at bottom flows into the stem.
In Arial 'R' the tail flows down and to right from center and straightens out at an angle to the end. The tail of 'R' in Helvetica flows out from center, curves straight down and ends in a slight curve to the right.
Arial contains more humanist characteristics than Helvetica which is originally Grotesk. The overall treatment of curves is softer and fuller in Arial when compared to Helvetica. Arial has diagonal terminal strokes giving it a less mechanical appearance than Helvetica which has straight cuts.
Arial and Helvetica are not the most legible typefaces because — like many sans serif typefaces — they have indistinguishable capital i and lower case L. One example cited by designer Viljami Salminen in his article Typography for User Interfaces is the word 'illiterate'.
Salminen goes on to write that
Some people would also agree that Helvetica sucks for any type of UI work since it wasn’t really developed for use on screen displays. When Apple “momentarily” switched to using Helvetica as their main interface typeface, it caused real usability and readability issues for certain users.
Arial can be found in Microsoft Windows, other Microsoft software applications, Apple Mac OS, PostScript computer printers, Minitel/ Prestel teletext systems, hyper terminals etc.
Helvetica can be spotted in commercial wordmarks like 3M, American Airlines, American Apparel, AT&T, Jeep, BMW, Lufthansa, Microsoft, Toyota, Motorola etc. Helvetica is widely used in Mac OS X, iPhone OS and iPod. It is used by the U.S. government in federal income tax forms and NASA uses it on Space Shuttle orbiter. It is used in subway signs, and has been adopted as the official font signage since 1989.
Variants of Arial include Arial Bold, Rounded, Italic, Unicode MS, Black, Narrow, Special and many more. Arial Baltic, Arial CE, Arial Cyr, Arial Greek, Arial Tur are aliases created in the Font Substitutes section of WIN.INI by Windows. Monotype sells Arial in reduced character sets, such as Arial CE, Arial WGL, Arial Cyrillic, Arial Greek, Arial Hebrew, Arial Thai. Arial glyphs are also used in fonts developed for non-Latin environments, including Arabic Transparent, BrowalliaUPC, Cordia New, CordiaUPC, Miriam, Miriam Transparent, Monotype Hei, and Simplified Arabic.
Helvetica’s language variant includes Cyrillic version and Helvetica Greek. Other variants include Helvetica Light, Compressed, Textbook, Inserat, Rounded, Narrow, Neue Helvetica, Neue Helvetica W1G and Helvetica World.
This section defines the IBM Font Class and the IBM Font Subclass parameter values to be used in the classification of font designs by the font designer or supplier. This information is stored in the sFamilyClass field of a font’s OS/2 table.
Format: 2-byte signed short
Title: Font-family class and subclass. Also see section 3.4.
Description: This parameter is a classification of font-family design.
Comments: The font class and font subclass are registered values assigned by IBM to each font family. This parameter is intended for use in selecting an alternate font when the requested font is not available. The font class is the most general and the font subclass is the most specific. The high byte of this field contains the family class, while the low byte contains the family subclass.
These values classify a font design as to its appearance, but do not identify the specific font family, typeface variation, designer, supplier, size, or metric table differences. It should be noted that some font designs may be classified equally well into more than IBM Font Class or Subclass. Such designs should be matched to a classification for which substitution of another font design from the same class or subclass would generally result in a similar appearance of the presented document.
This class ID is used to indicate that the associated font has no design classification or that the design classification is not of significance to the creator or user of the font resource.
This style is generally based upon the Latin printing style of the 15th to 17th century, with a mild diagonal contrast in stroke emphasis (lighter in upper left to lower right, heavier in upper right to lower left) and bracketed serifs. This IBM Class reflects the ISO Serif Class, Oldstyle and Legibility Subclasses as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design subclassification is not of significance to the creator or user of the font resource.
This style is generally characterized by a large x-height, with short ascenders and descenders. Specifically, it is distinguished by a medium resolution, hand tuned, bitmap rendition of the more general rounded legibility subclass. An example of this font style is the IBM Sonoran Serif family. This IBM Subclass reflects the ISO Serif Class, Legibility Subclass, and Rounded Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a medium x-height, with tall ascenders. An example of this font style is the ITC Garamond family. This IBM Subclass reflects the ISO Serif Class, Oldstyle Subclass, and Garalde Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a medium x-height, with a relatively monotone appearance and sweeping tails based on the designs of the early Venetian printers. An example of this font style is the Goudy family. This IBM Subclass reflects the ISO Serif Class, Oldstyle Subclass, and Venetian Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with a relatively monotone appearance and sweeping tails based on the designs of the early Venetian printers. An example of this font style is the Allied Linotype Palatino family. This IBM Subclass reflects the ISO Serif Class, Transitional Subclass, and Modified Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with wedge shaped serifs and a circular appearance to the bowls similar to the Dutch Traditional Subclass below, but with lighter stokes. An example of this font style is the Monotype Times New Roman family. This IBM Subclass reflects the ISO Serif Class, Oldstyle Subclass, and Dutch Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with wedge shaped serifs and a circular appearance of the bowls. An example of this font style is the IBM Press Roman family. This IBM Subclass reflects the ISO Serif Class and Legibility Subclass as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a small x-height, with light stokes and serifs. An example of this font style is the University family. This IBM Subclass reflects the ISO Serif Class and Contemporary Subclass as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by the fine hand writing style of calligraphy, while retaining the characteristic Oldstyle appearance. This IBM Subclass is not reflected in the 12/87 ISO/IEC 9541-5 draft standard.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.
This style is generally based upon the Latin printing style of the 18th to 19th century, with a pronounced vertical contrast in stroke emphasis (vertical strokes being heavier than the horizontal strokes) and bracketed serifs. This IBM Class reflects the ISO Serif Class, Transitional Subclass as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design sub-classification is not of significance to the creator or user of the font resource.
This style is generally characterized by a medium x-height, with fine serifs, noticeable contrast, and capitol letters of approximately the same width. An example of this font style is the Monotype Baskerville family. This IBM Subclass reflects the ISO Serif Class, Transitional Subclass, and Direct Line Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a hand written script appearance while retaining the Transitional Direct Line style. An example of this font style is the IBM Nasseem (Arabic) family. This IBM Subclass is not specifically reflected in the 12/87 ISO/IEC 9541-5 draft standard, though the ISO Serif Class, Transitional Subclass, and Direct Line Specific Group would be a close approximation.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.
This style is generally based upon the Latin printing style of the 20th century, with an extreme contrast between the thick and thin portion of the strokes. This IBM Class reflects the ISO Serif Class, Modern Subclass as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design sub-classification is not of significance to the creator or user of the font resource.
This style is generally characterized by a medium x-height, with thin hairline serifs. An example of this font style is the Monotype Bodoni family. This IBM Subclass reflects the ISO Serif Class, Modern Subclass, and Italian Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a hand written script appearance while retaining the Modern Italian style. An example of this font style is the IBM Narkissim (Hebrew) family. This IBM Subclass is not specifically reflected in the 12/87 ISO/IEC 9541-5 draft standard, though the ISO Serif Class, Modern Subclass, and Italian Specific Group would be a close approximation.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.
This style is a variation of the Oldstyle Serifs and the Transitional Serifs, with a mild vertical stroke contrast and bracketed serifs. This IBM Class reflects the ISO Serif Class, Square Serif Subclass as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design sub-classification is not of significance to the creator or user of the font resource.
This style is generally characterized by a large x-height, with serifs and strokes of equal weight. An example of this font style is the Allied Linotype Clarendon family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Clarendon Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with serifs of a lighter weight than the strokes and the strokes of a lighter weight than the Traditional. An example of this font style is the Monotype Century Schoolbook family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Clarendon Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with serifs of a lighter weight than the strokes. An example of this font style is the Monotype Century family.This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Clarendon Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with a simpler style of design and serifs of a lighter weight than the strokes. An example of this font style is the Allied Linotype Excelsior Family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Clarendon Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with short stub serifs and relatively bold stems. An example of this font style is the Cheltenham Family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Short Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with monotone stems. An example of this font style is the ITC Korinna Family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Monotone Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with moderate stroke thickness characteristic of a typewriter. An example of this font style is the Prestige Elite Family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Typewriter Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.
This style is characterized by serifs with a square transition between the strokes and the serifs (no brackets). This IBM Class reflects the ISO Serif Class, Square Serif Subclass (except the Clarendon Specific Group) as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design sub-classification is not of significance to the creator or user of the font resource.
This style is generally characterized by a large x-height, with serifs and strokes of equal weight. An example of this font style is the ITC Lubalin Family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Monotone Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a medium x-height, with serifs of lighter weight that the strokes. An example of this font style is the Candida Family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Monotone Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with serifs and strokes of equal weight and a geometric (circles and lines) design. An example of this font style is the Monotype Rockwell Family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Monotone Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with serifs and strokes of equal weight and an emphasis on the white space of the characters. An example of this font style is the Allied Linotype Serifa Family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Monotone Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a large x-height, with serifs and strokes of equal but moderate thickness, and a geometric design. An example of this font style is the IBM Courier Family. This IBM Subclass reflects the ISO Serif Class, Square Serif Subclass, and Monotone Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.
This class ID is reserved for future assignment, and shall not be used without formal assignment by IBM.
This style includes serifs, but which expresses a design freedom that does not generally fit within the other serif design classifications. This IBM Class reflects the remaining ISO Serif Class subclasses as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design sub-classification is not of significance to the creator or user of the font resource.
This style is generally characterized by a medium x-height, with light contrast in the strokes and a round full design. An example of this font style is the ITC Souvenir Family. This IBM Subclass is not reflected in the 12/87 ISO/IEC 9541-5 draft standard.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.
This style includes most basic letter forms (excluding Scripts and Ornamentals) that do not have serifs on the strokes. This IBM Class reflects the ISO Sans Serif Class as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design sub-classification is not of significance to the creator or user of the font resource.
This style is generally characterized by a large x-height, with uniform stroke width and a simple one story design distinguished by a medium resolution, hand tuned, bitmap rendition of the more general Neo-grotesque Gothic Subclass. An example of this font style is the IBM Sonoran Sans Serif family. This IBM Subclass reflects the ISO Sans Serif Class, Gothic Subclass, and Neo-grotesque Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a medium x-height, with light contrast in the strokes and a classic Roman letterform. An example of this font style is the Allied Linotype Optima family. This IBM Subclass reflects the ISO Sans Serif Class, Humanist Subclass as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a low x-height, with monotone stroke weight and a round geometric design. An example of this font style is the Fundicion Tipograficia Neufville Futura family. This IBM Subclass reflects the ISO Sans Serif Class, Geometric Subclass, Round Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a high x-height, with uniform stroke weight and a round geometric design. An example of this font style is the ITC Avant Garde Gothic family. This IBM Subclass reflects the ISO Sans Serif Class, Geometric Subclass, Round Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally characterized by a high x-height, with uniform stroke width and a simple one story design. An example of this font style is the Allied Linotype Helvetica family. This IBM Subclass reflects the ISO Sans Serif Class, Gothic Subclass, Neo-grotesque Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is similar to the Neo-grotesque Gothic style, with design variations to the G and Q. An example of this font style is the Allied Linotype Univers family. This IBM Subclass reflects the ISO Sans Serif Class, Gothic Subclass, Neo-grotesque Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This style is similar to the Neo-grotesque Gothic style, with moderate stroke thickness characteristic of a typewriter. An example of this font style is the IBM Letter Gothic family. This IBM Subclass reflects the ISO Sans Serif Class, Gothic Subclass, Typewriter Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally a simple design characteristic of a dot matrix printer. An example of this font style is the IBM Matrix Gothic family. This IBM Subclass is not reflected in the 12/87 ISO/IEC 9541-5 draft standard.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.
This style includes highly decorated or stylized character shapes that are typically used in headlines. This IBM Class reflects the ISO Ornamental Class and the ISO Blackletter Class as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design sub-classification is not of significance to the creator or user of the font resource.
This style is characterized by fine lines or lines engraved on the stems. An example of this font style is the Copperplate family. This IBM Subclass reflects the ISO Ornamental Class and Inline Subclass, or the Serif Class and Engraving Subclass as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is generally based upon the printing style of the German monasteries and printers of the 12th to 15th centuries. An example of this font style is the Old English family. This IBM Subclass reflects the ISO Blackletters Class as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is characterized by ornamental designs (typically from nature, such as leaves, flowers, animals, etc.) incorporated into the stems and strokes of the characters. An example of this font style is the Saphire family. This IBM Subclass reflects the ISO Ornamental Class and Decorative Subclass as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is characterized by a three dimensional (raised) appearance of the characters created by shading or geometric effects. An example of this font style is the Thorne Shaded family. This IBM Subclass reflects the ISO Ornamental Class and Three Dimensional Subclass as documented in the 12/87 ISO/IEC 9541-5 draft standard.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.
This style includes those typefaces that are designed to simulate handwriting. This IBM Class reflects the ISO Script Class and Uncial Class as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design sub-classification is not of significance to the creator or user of the font resource.
This style is characterized by unjoined (nonconnecting) characters that are generally based on the hand writing style of Europe in the 6th to 9th centuries. An example of this font style is the Libra family. This IBM Subclass reflects the ISO Uncial Class as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is characterized by joined (connecting) characters that have the appearance of being painted with a brush, with moderate contrast between thick and thin strokes. An example of this font style is the Mistral family. This IBM Subclass reflects the ISO Script Class, Joined Subclass, and Informal Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is characterized by joined (connecting) characters that have a printed (or drawn with a stiff brush) appearance with extreme contrast between the thick and thin strokes. An example of this font style is the Coronet family. This IBM Subclass reflects the ISO Script Class, Joined Subclass, and Formal Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is characterized by joined (connecting) characters that have a uniform appearance with little or no contrast in the strokes. An example of this font style is the Kaufmann family. This IBM Subclass reflects the ISO Script Class, Joined Subclass, and Monotone Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is characterized by beautifully hand drawn, unjoined (non-connecting) characters that have an appearance of being drawn with a broad edge pen. An example of this font style is the Thompson Quillscript family. This IBM Subclass reflects the ISO Script Class, Unjoined Subclass, and Calligraphic Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is characterized by unjoined (non-connecting) characters that have the appearance of being painted with a brush, with moderate contrast between thick and thin strokes. An example of this font style is the Saltino family. This IBM Subclass reflects the ISO Script Class, Unjoined Subclass, and Brush Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is characterized by unjoined (non-connecting) characters that have a printed (or drawn with a stiff brush) appearance with extreme contrast between the thick and thin strokes. An example of this font style is the Virtuosa family. This IBM Subclass reflects the ISO Script Class, Unjoined Subclass, and Formal Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
This style is characterized by unjoined (non-connecting) characters that have a uniform appearance with little or no contrast in the strokes. An example of this font style is the Gilles Gothic family. This IBM Subclass reflects the ISO Script Class, Unjoined Subclass, and Monotone Specific Group as documented in the 12/87 ISO/IEC 9541-5 draft standard.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.
This class ID is reserved for future assignment, and shall not be used without formal assignment by IBM.
This style is generally design independent, making it suitable for Pi and special characters (icons, dingbats, technical symbols, etc.) that may be used equally well with any font. This IBM Class reflects various ISO Specific Groups, as noted below and documented in the 12/87 ISO/IEC 9541-5 draft standard.
This subclass ID is used to indicate that the associated font has no design sub-classification or that the design sub-classification is not of significance to the creator or user of the font resource.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This style is characterized by either both or a combination of serif and sans serif designs on those characters of the font for which design is important (e.g., superscript and subscript characters, numbers, copyright or trademark symbols, etc.). An example of this font style is found in the IBM Symbol family. This IBM Subclass is not reflected in the 12/87 ISO/IEC 9541-5 draft standard.
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This style is characterized by a Oldstyle Serif IBM Class design on those characters of the font for which design is important (e.g., superscript and subscript characters, numbers, copyright or trademark symbols, etc.). An example of this font style is found in the IBM Sonoran Pi Serif family. This IBM Subclass is not directly reflected in the 12/87 ISO/IEC 9541-5 draft standard, though it is indirectly by the ISO Serif Class and Legibility Subclass (implies that all characters of the font exhibit the design appearance, while only a subset of the characters actually exhibit the design).
This style is characterized by a Neo-grotesque Sans Serif IBM Font Class and Subclass design on those characters of the font for which design is important (e.g., superscript and subscript characters, numbers, copyright or trademark symbols, etc.). An example of this font style is found in the IBM Sonoran Pi Sans Serif family. This IBM Subclass is not directly reflected in the 12/87 ISO/IEC 9541-5 draft standard, though it is indirectly by the ISO Sans Serif Class and Gothic Subclass (implies that all characters of the font exhibit the design appearance, while only a subset of the characters actually exhibit the design).
These subclass IDs are reserved for future assignment, and shall not be used without formal assignment by IBM.
This subclass ID is used for miscellaneous designs of the associated design class that are not covered by another Subclass.