Overview
This proposal provides a path to enable the upp
Related axes: YTUC, YTLC, YTDE, YTAS
Similar axes: None
Axis type: Parametric
Proposed Axis Details: ytlc
Tag: ytlc
Name: y transparent lowercase
Axis type: Parametric
Description: assigns a “white” per mille value to each instance of the design space
Valid numeric range: 0 to 1000
Scale interpretation: Values should be interpreted as per-mille-of-em
Recommended or required “Regular” value: N/A
Suggested programmatic interactions: Example: Program or script may adjust the uppercase in coordination with another language or script, or adjust uppercase letters for a tv, vr, video setting to adjust to space, resolution or orientation.
UI recommendations: Users may choose to program a variant in connection to direct or conjunctive input for a page description language, or via a user interface
Script or language considerations: Can be used for all scripts
Related axes: wght, width, opsz
Similar axes: YTUC, YTDE, YTAS
Additional information: YTLC changes lowercase letters white space in the y direction. This axis contributes to opsz by raising the lowercase to increase legibility in small sizes. By allowing this axes to be used independently of opsz, the axis contributes to expanding the design space of a typeface.
Justification
Vendor commitments: Google Fonts, Font Bureau, TYPETR
Conventionality benefits: The "x height" of lowercase Latin letters is an attribute that many users can point to, but rather than calling this axes "x height," we see conventionality benefits in a name that fits into the systematic structure of this overall proposal: Y dimension transparency of lower case letters.
Interoperability benefits: height matching, design space
Demonstration:
Proposed Axis Details: ytuc
Tag: ytuc
Name: y transparent uppercase
Axis type: Parametric
Description: a “white” per mille value for each Uppercase Height in the design space
Valid numeric range: -1000 to 1000
Scale interpretation: Values should be interpreted as per-mille-of-em
Recommended or required “Regular” value: N/A
Suggested programmatic interactions: Example: Program or script may adjust the uppercase in coordination with another language or script, or adjust uppercase letters in a tv, vr, video setting to adjust to space, resolution or orientation.
UI recommendations: Users may choose to program a variant in connection to direct or conjunctive input for a page description language, or via a user interface
Script or language considerations: Can be used for all scripts
Related axes: wght, width, opsz
Similar axes: YTLC, YTDE, YTAS
Additional information: YTUC changes the y direction or white space in uppercase letters. By itself, contributes to the design space when building of small, medium and tall capitals, or unicase.
Justification
Vendor commitments: Google Fonts, Font Bureau, TYPETR
Conventionality benefits: The height of the upper case Latin letters is an attribute that all users can easily point to, but rather than calling this axes "cap height," we see conventionality benefits in a name that fits into the systematic structure of this overall proposal: Y dimension transparency of upper case letters.
Interoperability benefits: height matching, design space
Demonstration:
Proposed Axis Details: ytde
Tag: ytde
Name: y transparent descender
Axis type: Parametric
Description: assigns a “white” per mille value to each instance of the design space
Valid numeric range: -1000 to 0
Scale interpretation: Values should be interpreted as per-mille-of-em
Recommended or required “Regular” value: N/A
Suggested programmatic interactions: Example: Program or script may adjust the descenders in coordination leading and column width to prevent letters from touching vertically.
UI recommendations: Users may choose to program a variant in connection to direct or conjunctive input for a page description language, or via a user interface
Script or language considerations: Can be used for all scripts
Related axes: wght, width, opsz
Similar axes: YTUC, YTLC, YTAS
Additional information: YTDE changes the y or vertical descenders. Contributes to opsz in making small sizes fit better in text settings. Useful in adjusting letters when leading is reduced, in all sizes. Very useful in responsive design when headlines change from single lines to multiple lines of text.
Justification
Vendor commitments: Google Fonts, Font Bureau, TYPETR
Conventionality benefits: The zone or general area that descenders live in is an attribute that all users can easily point to (along with collisions in this area suffered by fonts without it) but not an area they may know by name. This name fits into the systematic structure of this overall proposal: Y dimension transparency of descenders.
Interoperability benefits: linespacing, design space
Demonstration:
Proposed Axis Details: ytas
Tag: ytas
Name: y transparent ascender
Axis type: Parametric
Description: assigns a “white” per mille value to each instance of the design space
Valid numeric range: 0 to 1000
Scale interpretation: Values should be interpreted as per-mille-of-em
Recommended or required “Regular” value: N/A
Suggested programmatic interactions: Example: Program or script may adjust the ascenders in coordination leading and column width to prevent letters from touching vertically.
UI recommendations: Users may choose to program a variant in connection to direct or conjunctive input for a page description language, or via a user interface
Script or language considerations: Can be used for all scripts
Related axes: wght, width, opsz
Similar axes: YTUC, YTLC, YTDE
Additional information: YTAS changes the y or vertical ascenders. Contributes opsz in making type fit better when size is reduced.
Justification
Vendor commitments: Google Fonts, Font Bureau, TYPETR
Conventionality benefits: The zone or general area that ascenders live in is an attribute that all users can easily point to (along with collisions in this area suffered by fonts without it) but not an area they may know by name. This name fits into the systematic structure of this overall proposal: Y dimension transparency of ascenders.
Proposal: Parametric Latin Axes
Administrative Information
Proposers name: Sam Berlow
Vendor affiliation: Type Network
Proposal name: Parametric Latin Axes
Date of submission: 12/11/2017
New or revised proposal: New
Previous revision date: N/A
General Technical Information
Overview This proposal provides a path to enable the upp Related axes: YTUC, YTLC, YTDE, YTAS
Similar axes: None
Axis type: Parametric
Proposed Axis Details:
ytlcTag: ytlc
Name: y transparent lowercase
Axis type: Parametric
Description: assigns a “white” per mille value to each instance of the design space
Valid numeric range: 0 to 1000
Scale interpretation: Values should be interpreted as per-mille-of-em
Recommended or required “Regular” value: N/A
Suggested programmatic interactions: Example: Program or script may adjust the uppercase in coordination with another language or script, or adjust uppercase letters for a tv, vr, video setting to adjust to space, resolution or orientation.
UI recommendations: Users may choose to program a variant in connection to direct or conjunctive input for a page description language, or via a user interface
Script or language considerations: Can be used for all scripts
Related axes: wght, width, opsz
Similar axes: YTUC, YTDE, YTAS
Additional information: YTLC changes lowercase letters white space in the y direction. This axis contributes to opsz by raising the lowercase to increase legibility in small sizes. By allowing this axes to be used independently of opsz, the axis contributes to expanding the design space of a typeface.
Justification
Vendor commitments: Google Fonts, Font Bureau, TYPETR
Conventionality benefits: The "x height" of lowercase Latin letters is an attribute that many users can point to, but rather than calling this axes "x height," we see conventionality benefits in a name that fits into the systematic structure of this overall proposal: Y dimension transparency of lower case letters.
Interoperability benefits: height matching, design space
Demonstration:
Proposed Axis Details:
ytucTag: ytuc
Name: y transparent uppercase
Axis type: Parametric
Description: a “white” per mille value for each Uppercase Height in the design space
Valid numeric range: -1000 to 1000
Scale interpretation: Values should be interpreted as per-mille-of-em
Recommended or required “Regular” value: N/A
Suggested programmatic interactions: Example: Program or script may adjust the uppercase in coordination with another language or script, or adjust uppercase letters in a tv, vr, video setting to adjust to space, resolution or orientation.
UI recommendations: Users may choose to program a variant in connection to direct or conjunctive input for a page description language, or via a user interface
Script or language considerations: Can be used for all scripts
Related axes: wght, width, opsz
Similar axes: YTLC, YTDE, YTAS
Additional information: YTUC changes the y direction or white space in uppercase letters. By itself, contributes to the design space when building of small, medium and tall capitals, or unicase.
Justification
Vendor commitments: Google Fonts, Font Bureau, TYPETR
Conventionality benefits: The height of the upper case Latin letters is an attribute that all users can easily point to, but rather than calling this axes "cap height," we see conventionality benefits in a name that fits into the systematic structure of this overall proposal: Y dimension transparency of upper case letters.
Interoperability benefits: height matching, design space
Demonstration:
Proposed Axis Details:
ytdeTag: ytde
Name: y transparent descender
Axis type: Parametric
Description: assigns a “white” per mille value to each instance of the design space
Valid numeric range: -1000 to 0
Scale interpretation: Values should be interpreted as per-mille-of-em
Recommended or required “Regular” value: N/A
Suggested programmatic interactions: Example: Program or script may adjust the descenders in coordination leading and column width to prevent letters from touching vertically.
UI recommendations: Users may choose to program a variant in connection to direct or conjunctive input for a page description language, or via a user interface
Script or language considerations: Can be used for all scripts
Related axes: wght, width, opsz
Similar axes: YTUC, YTLC, YTAS
Additional information: YTDE changes the y or vertical descenders. Contributes to opsz in making small sizes fit better in text settings. Useful in adjusting letters when leading is reduced, in all sizes. Very useful in responsive design when headlines change from single lines to multiple lines of text.
Justification
Vendor commitments: Google Fonts, Font Bureau, TYPETR
Conventionality benefits: The zone or general area that descenders live in is an attribute that all users can easily point to (along with collisions in this area suffered by fonts without it) but not an area they may know by name. This name fits into the systematic structure of this overall proposal: Y dimension transparency of descenders.
Interoperability benefits: linespacing, design space
Demonstration:
Proposed Axis Details:
ytasTag: ytas
Name: y transparent ascender
Axis type: Parametric
Description: assigns a “white” per mille value to each instance of the design space
Valid numeric range: 0 to 1000
Scale interpretation: Values should be interpreted as per-mille-of-em
Recommended or required “Regular” value: N/A
Suggested programmatic interactions: Example: Program or script may adjust the ascenders in coordination leading and column width to prevent letters from touching vertically.
UI recommendations: Users may choose to program a variant in connection to direct or conjunctive input for a page description language, or via a user interface
Script or language considerations: Can be used for all scripts
Related axes: wght, width, opsz
Similar axes: YTUC, YTLC, YTDE
Additional information: YTAS changes the y or vertical ascenders. Contributes opsz in making type fit better when size is reduced.
Justification
Vendor commitments: Google Fonts, Font Bureau, TYPETR
Conventionality benefits: The zone or general area that ascenders live in is an attribute that all users can easily point to (along with collisions in this area suffered by fonts without it) but not an area they may know by name. This name fits into the systematic structure of this overall proposal: Y dimension transparency of ascenders.
Interoperability benefits: linespacing
Demonstration: