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- IMPORTANT NOTICE
- This variant of LaTeX is now UNSUPPORTED but we have left its
- description in this file for posterity ... enjoy!
-
- LaTeX on small systems: auto-loading
-
- 21 November 1995
-
-
-On some small systems (perhaps most noticeably emTeX for PCs if your
-machine is unable to use the TeX386 version) LaTeX uses up a large
-amount of the memory available to TeX, leaving very little for storage
-of any further commands, complex text (such as tables), floats or
-cross references that may occur in a typical document. Note that
-these limits are built into the TeX executable and do not directly
-correspond to any physical memory that your machine has installed.
-
-In order to help with this problem, we have produced an *experimental*
-configuration of LaTeX in which certain functions are not predefined
-in the format, but are loaded automatically from a style file the first
-time they are used. This saves a lot of memory in the case that a
-document does not use these features.
-
-In this release two environments are `auto-loaded' in this way,
-`picture' and `tabbing', as are various bits of internal code used in
-error handling, font loading and advanced page makeup.
-
-
-MAKING THE AUTOLOAD FORMAT
-==========================
-
-NOTE: Before you can proceed any further you *must* unpack the standard
-version from unpack.ins.
-
-Process the file autoload.ins (with plain TeX or LaTeX, not iniTeX).
-
-This will produce six files:
-
- latexa.ltx source file for the smaller format
-
- And the following five package files:
-
- autopict.sty source for picture mode
- autotabg.sty source for tabbing environment
- autoerr.sty texts of most LaTeX error commands
- autofss1.sty little used internal font selection commands
- autoout1.sty source for \enlargethispage and related commands.
-
-The `latexa' format should then be made by running iniTeX on the
-file `latexa.ltx'.
-
-To do this, follow the instructions in install.txt (and emtex.txt
-etc) but replace:
- `latex.ltx' and `latex.fmt'
-by
- `latexa.ltx' and `latexa.fmt'.
-
-Finally, the five files `autoxxxx.sty' should be moved to the
-directory in which the other LaTeX .sty files have been placed.
-
-
-USING THE FORMAT
-================
-
-The resulting format should normally be used in exactly the same way
-as standard LaTeX.
-
-Picture mode can be used without any special commands. Since picture
-mode is not pre-defined, you will notice TeX loading the `autopict'
-package the first time you use \begin{picture} (or \thicklines) in a
-document. This takes some time (and the name of the file being loaded
-appears on the terminal) but otherwise the behaviour should be just as
-with standard LaTeX.
-
-For instance, processing usrguide.tex (which has a picture on page 23)
-produces the following terminal output:
-
- This is TeX, Version 3.1415 (C version 6.1)
- (usrguide.tex
- LaTeX2e (autoload version) <1995/06/01>
- )
- (ltxguide.cls
- Document Class: ltxguide 1994/12/14 Standard LaTeX class
- (article.cls
- Document Class: article 1995/06/05 v1.3d Standard LaTeX document class
- (size10.clo))) (usrguide.aux) (OMScmr.fd) (usrguide.toc [1]) [2] [3]
- [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18]
- [19] [20] [21] [22] (autopict.sty) [23] [24] [25] [26] [27] [28] [29]
- [30] (usrguide.aux) )
-
-(The output may differ on your machine due to different path names for
-the files.)
-
-
-POSSIBLE PROBLEMS
-=================
-
-Sometimes you need to redefine a command before it is used. Clearly, if
-the command is not initially defined, it cannot easily be redefined!
-
-As a real example, the popular `epic' package redefines some picture
-mode commands, therefore to use epic it is necessary to force
-picture mode to be loaded by explicitly putting in your document
-\usepackage{autopict} before \usepackage{epic}.
-
-If a document containing \usepackage{autopict} is sent to a site using
-the `full' version of LaTeX (which has picture mode defined in the
-format) then this \usepackage will be silently ignored and the
-document will still work correctly.
-
-A note to package writers: if your package depends on the picture
-environment being loaded then you can avoid the user needing to add
-the extra \usepackage to documents by adding \RequirePackage{autopict}
-to the beginning of your package file.
-
-Similar comments apply to `tabbing' and the `autotabg' package.
-
-
-INTERNAL INTERFACE
-==================
-
-Most new features added in LaTeX2e that were not in LaTeX2.09 have a
-consistent interface of commands \WithMixedCase names.
-
-If you inspect the implementation of this auto-loading feature you will
-not find any such interface, but rather an ad hoc collection of low-
-level TeX commands.
-
-This situation may change as more practical experience is gained with
-the auto-loading feature. In future releases it may be possible to
-auto-load more parts of LaTeX (so making an even smaller `base' format)
-and an interface for producing the auto-loaded files may be defined.
-
-However, for the user, the nature of the implementation should not
-matter too much since in the normal case the loading of the file is
-`invisible' and happens automatically the first time it is needed.
-
---- Copyright 1995 the LaTeX3 project. All rights reserved ---