The LaTeX Team submitted an update to the
l3kernel
package.
Version number: 2018-02-21 License type: lppl1.3c
Summary description: LaTeX3 programming conventions
Announcement text: ---------------------------------------------------------------------- # Release 2017-02-21
This release features two new *experimental* modules, l3color and l3draw, along with a small number of features to support this new material
## l3color
This new *experimental* code provides basic user interfaces for setting the color of material in documents. The input form is based on that in the popular xcolor package, for example
color_select:n { red!30!blue }
Some features for supporting spot colors are also included: this area is particularly complex and feedback on all aspects is very welcome.
## l3draw
This new module provides a code-level approach to creating graphical material. The approach take is *heavily* inspired by the pgf package: the vast majority of interfaces are compatible with the equivalent pgf... commands.
At present, the coverage of l3draw is significantly smaller than that in pgf, but at the same time it is now capable of creating basic graphics. Supported concepts are
- Calculation of points - Path construction, including a variety of geometric shapes - Path insertion with stroking, filling and clipping - Color (fill/stroke/both) - see also l3color
All mathematical operations are carried out by the LaTeX3 FPU, rather than using dimensions. As such, the accuracy and range of the values is significantly extended compared with pgf. Point calculations are also expandable, with the *internal* handling of this area very different from pgf.
The team anticipate covering the bulk of pgf-like functionality over coming months.
## Additions to expl3
The FPU now supports tuples, for example
fp_eval:n { (1,2) + (3, 4) } fp_eval:n { sqrt(2) * (1,1) }
to allow work with co-ordinate pairs.
Step functions have been added for dim variables, e.g. dim_step_inline:nnnn.
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This package is located at http://mirror.ctan.org/macros/latex/contrib/l3kernel
More information is at http://www.ctan.org/pkg/l3kernel
We are supported by the TeX User Groups. Please join a users group; see http://www.tug.org/usergroups.html .
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Thanks for the upload.
For the CTAN Team Ina Dau