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Direc­tory tex-archive/macros/latex/contrib/l3experimental

   Experimental LaTeX3 High-Level Concepts



The files in this distribution represent a snapshot of selected files
from the Subversion (SVN) repository of the LaTeX3 Project.

To obtain current versions of the files, visit
<> which contains further


The l3experimental packages are a collection of experimental implementations
for aspects of the LaTeX3 kernel, dealing with higher-level ideas such as the
Designer Interface. Some of them work as stand alone packages, providing new
functionality, and can be used on top of LaTeX2e with no changes to the
existing kernel. Others go further, and redefine LaTeX2e internals to provide
better methods for managing certain constructs. The packages in the collection
are under active development and the interfaces may change.

Currently included in the CTAN release of l3experimental are the following
 * l3dt
 * l3sort
 * l3str
 * xcoffins
 * xgalley


A 'data table' is a method of storing data in a spreadsheet-like format,
with rows and fields. This module provides the basic management structures
needed to work with data tables, including the ability to map to fields
on a row-by-row basis.


Ordered variables content (in tl, clist or seq variables) may be sorted
in a flexible manner using the l3sort module. The definition of how to sort
two items is provided by the programmer at the point at which the sort is
carried out. Internally, the sorting algorithm is designed to take advantage
of TeX token registers to allow a high performance and scalable sort.


A 'string' in TeX terms is a token list in which all of the tokens have
category code 12 ('other'), with the exception of spaces which have the
category code 10 ('space'). The l3str bundle consists of two parts. The
first is l3str itself. This is a collection of functions to act on strings,
including for manipulations such as UTF8 mappings in pdfTeX. The second
part of the bundle is l3regex, a regular expression search-and-replace
implementation written in TeX primitives. The regex module works on a string
basis, ignoring category codes.


A _coffin_ is a 'box with handles': a data structure which comprises
both a TeX box and associated information to allow controlled typesetting.
The xcoffins package provides a high-level interface for manipulating
coffins. This is supported by the lower-level l3coffins package, which
provides the data structure.


In LaTeX3 terminology a galley is a rectangular area which receives
text and other material filling it from top. The vertically extend of
a galley is normally not restricted: instead certain chunks are taken
off the top of an already partially filled galley to form columns or
similar areas on a page. This process is typically asynchronous but
there are ways to control or change its behaviour. The xgalley module
provides a mechanism for filling galleys and controlling the spacing,
hyphenation and justification within them.


Discussion concerning the approach, suggestions for improvements,
changes, additions, etc. should be addressed to the list LaTeX-L.

You can subscribe to this list by sending mail to

with the body containing

  subscribe LATEX-L  <Your-First-Name> <Your-Second-Name>


The issue tracker for LaTeX3 bugs is currently located at

Please report specific issues with LaTeX3 code there. More general
discussion should be directed to the LaTeX-L lists.

--- Copyright 1998 -- 2011
    The LaTeX3 Project.  All rights reserved ---


Name Size Date Notes
README 3787 2013-12-31 05:42:54
l3dt.dtx 44017 2013-12-31 05:42:54 Ex­per­i­men­tal LaTeX 3 data ta­bles
l3dt.ins 904 2013-12-31 05:42:54
l3dt.pdf 550355 2013-12-31 05:42:54
l3flag.dtx 9297 2013-12-31 05:42:54
l3flag.pdf 390079 2013-12-31 05:42:54
l3galley.dtx 92500 2013-12-31 05:42:54
l3galley.pdf 681124 2013-12-31 05:42:54
l3regex.dtx 228238 2013-12-31 05:42:54 Reg­u­lar ex­pres­sion fa­cil­i­ties for LaTeX
l3regex.pdf 981361 2013-12-31 05:42:54
l3sort.dtx 34651 2013-12-31 05:42:54
l3sort.ins 917 2013-12-31 05:42:54
l3sort.pdf 556062 2013-12-31 05:42:54
l3str-convert.dtx 117559 2013-12-31 05:42:54
l3str-convert.pdf 782007 2013-12-31 05:42:54
l3str-format.dtx 30312 2013-12-31 05:42:54
l3str-format.pdf 569159 2013-12-31 05:42:54
l3str.dtx 39708 2013-12-31 05:42:54
l3str.ins 3075 2013-12-31 05:42:54
l3str.pdf 622976 2013-12-31 05:42:54
l3tl-analysis.dtx 39429 2013-12-31 05:42:54
l3tl-analysis.pdf 521010 2013-12-31 05:42:54
l3tl-build.dtx 10270 2013-12-31 05:42:54
l3tl-build.pdf 468371 2013-12-31 05:42:54
xcoffins.dtx 36030 2013-12-31 05:42:54
xcoffins.ins 928 2013-12-31 05:42:54
xcoffins.pdf 490241 2013-12-31 05:42:54
xgalley.dtx 59300 2013-12-31 05:42:54 Con­trol text feed­ing onto the page
xgalley.ins 988 2013-12-31 05:42:54
xgalley.pdf 575666 2013-12-31 05:42:54

Down­load the com­plete con­tents of this di­rec­tory in one zip archive (6.9M).

l3­ex­per­i­men­tal – Ex­per­i­men­tal LaTeX3 con­cepts

The l3­ex­per­i­men­tal pack­ages are a col­lec­tion of ex­per­i­men­tal im­ple­men­ta­tions for as­pects of the LaTeX3 ker­nel, deal­ing with higher-level ideas such as the De­signer In­ter­face. Some of them work as stand alone pack­ages, pro­vid­ing new func­tion­al­ity, and can be used on top of LaTeX2ε with no changes to the ex­ist­ing ker­nel.

The present re­lease in­cludes:

  • xgal­ley, which con­trols boxes re­ceiv­ing text for type­set­ting.
  • l3dt: ker­nel sup­port for data ta­bles;
  • l3regex: ker­nel sup­port for reg­u­lar ex­pres­sion search and re­place op­er­a­tions;
  • l3­sort: ker­nel sup­port for sort­ing se­quences, to­ken lists or comma-lists, ac­cord­ing to user-spec­i­fied com­par­i­son cri­te­ria;
  • l3str: ker­nel sup­port for string ma­nip­u­la­tion;
  • l3tl-build: ker­nel sup­port for to­ken list build­ing;
  • l3tl_anal­y­sis: ker­nel sup­port for to­ken list anal­y­sis; and xcoffins, which al­lows the align­ment of boxes us­ing a se­ries of ‘han­dle’ po­si­tions, sup­ple­ment­ing the sim­ple TeX ref­er­ence point.
All the files of the bun­dle are also avail­able in the Sub­ver­sion (SVN) repos­i­tory of the LaTeX3 Project.

The bun­dle on CTAN is based on a snap­shot of the SVN repos­i­tory on 2013-10-11.

Home page­
Ver­sionSVN 4634
Li­censeThe LaTeX Project Public Li­cense 1.3
Copy­right2012-2013 The LaTeX3 Project
Main­tainerThe LaTeX Team
Con­tained inTeXLive as l3­ex­per­i­men­tal
MiKTeX as l3­ex­per­i­men­tal
Topics work done for the project to up­grade LaTeX
lay­out of ob­jects on the page
sup­port for de­vel­op­ment of (La)TeX macros
de­vel­op­ing ver­sion of new soft­ware
See also l3packages
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