B.5 Classes, Packages and Page Styles
B.5.1 Document Class
Both LATEX 2є \documentclass
and old LATEX
\documentstyle
are accepted.
Their argument style is interpreted by attempting to load a
style.hva file (see C.1.1.1 to see where HEVEA
searches for files).
Presently, only the style files article.hva, seminar.hva,
book.hva and report.hva exist, the latter two
being equivalent.
If one of the reckognized styles has already been loaded at the time when
\documentclass
or
\documentstyle
is executed, then no attempt to load a style
file is made. This allows to override the document style file by
giving one of the four recognized style files of HEVEA as command
line arguments (see section 2.2).
Conversely, if HEVEA attempt to load style.hva
fails, then a fatal error is flagged, since it can be sure
that the document cannot be processed.
B.5.2 Packages and Page Styles
HEVEA reacts to
\usepackage[
options]{
pkg}
in
the following way:
-
The whole
\usepackage
command with its arguments gets echoed to the
image file (see 6).
- HEVEA attempt to load file pkg.hva,
(see section C.1.1.1 on where HEVEA searches for files).
Note that HEVEA will not fail if it cannot load
pkg.hva and that no warning is issued in that case.
The HEVEA distribution contains implementations of some packages,
such as verbatim, colors, graphics, etc.
In some situations it may not hurt at all if HEVEA does not
implement a package, for instance HEVEA does not provide an
implementation for the packages isolatin1 or
fullpage...
Users needing an implementation of a package that is widely used and
available are encouraged to contact the
author.
Experienced users may find it fun to attempt to write package
implementations by themselves.
B.5.3 The Title Page and Abstract
All title related commands exist, with the following peculiarities:
-
The
\title
command must appear in the preamble for the title
to appear in HTML document header.
- When not present the date is left empty. The
\today
command generates will work properly only if hevea is invoked
with the -exec xxdate.exe
option.
Otherwise \today
generates nothing and a warning is issued.
The abstract
environment is present is all base styles,
including the book style.
The titlepage
environment does nothing.