This page is intended to offer tips about downloading and using the DjVu
Plug-in specifically for The Spectator Project. It is therefore
supplemental to, but is not
intended to replace the official help pages that come with the plug-in and
may be accessed through the plug-in Preferences menu by clicking the right
mouse button while the DjVu window has been selected. We recommend that you
take the time at some point to read the official help pages in addition to
Downloading and Installing the DjVu Plug-in
In order to view the DjVu images of The Spectator Project,
you must first download the DjVu Plug-in from LizardTech. The easiest way to do this is by clicking the colorful DjVu
near the bottom of The Spectator Complete page.
This will open a new window with the DjVu Zone download page.
Clicking the same icon (the second down in the yellow "Download" panel at the left) on
the LizardTech page takes you to the downloads page. Your platform (e.g., Windows,
Macintosh) should already be selected. For other platforms, such as Linux or
Solaris, click the DjVuLibre button instead, which will take you to the open source download site at SourceForge. At the LizardTech site,
if you have Windows,
you will be offered the choice of a "Manual Install" or "Autoinstall". If you
accept the license for the Autoinstall, the plug-in will immediately be
downloaded and installed on your system without any further action on your part.
(Note: if you are using a library computer and do not have permission to save
files, you may have to get the assistance of an administrator to download and
install the DjVu plug-in. Don't hesitate to ask for such help.)
Even if you have Windows, you may wish to use the Manual Install. If
you have both Netscape and Internet Explorer, for instance, and would like to
use the DjVu plug-in with both browsers, it is easier to do so with the
Manual Install. With all other platforms, you will only see a "Manual Install"
|The DjVu "Download Plug-in" Icons|
Clicking this button
takes you to a page with installation instructions, links to documentation, and
the download link. When you click the download link, you will be asked
to accept the License for the free plug-in. Clicking "Yes, I agree" begins the
actual download. The plug-in itself is very small, much smaller in fact than the
the Acroread plug-in, so it should download quickly, though download speeds, of
course, vary according to your connection. DSL and cable users can often
download the plug-in in less than a minute, but it may take several minutes to
download with a slower, modem connection. If you use Internet Explorer, you may
be prompted with a warning message as you begin to download the software. This
is a routine warning given whenever any executable file is to be downloaded, and
should not worry you. The DjVu plug-in has never been known to harm anyone's
computer system. Once, the plug-in file has been downloaded, unpack it and
follow the installation instructions for your platform, which usually involve
running a simple installation wizard that installs the plug-in in less than a
minute. The Manual Install program scans your disk for browsers and configures
each of them to handle the DjVu MIME types properly. Once the plug-in has
been properly installed, you should see the DjVu "Welcome Message" and can
begin using the plug-in to view The Spectator.
You can adjust the behavior of the DjVu Plug-in by calling up the general
pop-up menu and choosing "Preferences." To do this you simply click the right
mouse button while the DjVu plug-in window is selected. The pop-up menu looks
The preferences window allows you to adjust such things as the size, zoom, and
preferred activation key of your "magnifying glass," and the size of your cache.
The general pop-up window also provides alternative routes to all the functions
of the toolbar, as well as links to the official plug-in help pages.
Using the DjVu Plug-in to View the Texts of The Spectator Project
When a DjVu file is called from the web server, the plug-in takes over the
duties of displaying it from the browser. Although some volumes of The Spectator Project are
over 700 pages, the plug-in initially downloads only the page being called and
the two surrounding pages. This process, which allows the document to begin
displaying immediately, is transparent to the user. The plugin has its own
toolbar, which displays at the bottom of the DjVu frame. Although slightly
different in appearance on each platform, the toolbar usually looks something
You can use the toolbar to resize, rotate, select and copy text, print, search, save, and navigate the
pages of The Spectator Project. The Display Mode allows you to
look at the different display formats and "layers" of an image (Color, Black
and White, Background, and Foreground).
The Zoom functions (the zoom textbox, pulldown menu, select zoom, and magnifying glass
you to change the size of the image as displayed in the plug-in window.
The current default size for The Spectator Project pages is "Fit Width",
which makes the image as wide as it can be without requiring a horizontal
scrollbar just above the toolbar itself. This size varies according to the size of the user's browser, and though it will always give a good "overview" of the
page's contents, it may be too small to read on some screens. It may fairly be
said that DjVu likes a big screen. You might discover that you can get good
results simply by maximizing the browser window, which automatically increases
the size of "Fit Width". If the text is still too small to read, however, you can
use the toolbar or keyboard shortcuts to increase the size of the image to
100% or more. One very fast way to increase the size of the image is simply to
type "1" (for 100%), "2" (for 200%), or "3" (for 300%). Overwriting the
size in the Zoom "textbox" allows you to specify arbitrary zooms up to 999%. The
larger zooms effectively make The Spectator Project a set of
"large print" electronic books. The select zoom function allows you to select
a region of the plug-in window and zoom it to fit the full window. When the image grows
too large to fit the DjVu window, a horizontal scrollbar will be generated
automatically. You can use the intuitive "grabbing hand" cursor or keyboard
equivalents to slide the page in the display window. You might also use the
pop-up "magnifying glass" to increase the size of a selected portion of the
image which may then be moved around the page with the mouse.
|The Zoom Functions of the Plug-in|
The DjVu Plug-in toolbar also offers a set of functions for printing and
saving page images. The most important of these is the print function, which can
be called by clicking the "printer" icon on the toolbar.
The print function allows you to print the current page or a range of up pages
up to a whole volume at different zooms. In effect, it makes
The Spectator Project a set of completely new print editions of the texts.
Most plug-ins now set the default to print the entire document. To
print a selected range of pages or one page at a time, you need to select the
"pages from...to" option and specify a range of pages. You should be careful to
select a reasonable range of pages before actually printing, or you
might wind up accidentally printing 700 pages or more depending on the text.
It is possible to print
enlarged zooms, but we recommend using the "reduce to fit" option, which centers
the pages nicely on standard paper and prints at a size not unlike that of the
original print editions. The file saving function called by clicking the "floppy
disk" icon is similar to the print function, except that it allows a DjVu page
or range of pages to be saved on a local machine.
The pop-up menu (seen above) also allows DjVu files to be "exported" as BMP or PBM files,
enabling you, among other things, to have a page from The Spectator Project as your
|The File Manipulation Functions of the Plug-in|
The right side of the DjVu Plug-in toolbar is devoted to navigation
functions. The first of these, the "Page Select" function, is a combination
textbox and pulldown menu. The textbox shows the current DjVu page number
(not to be confused with the text page number that appears on the
The DjVu page numbers refer to the order of the pages in each multipage
index, which in the case of The Spectator Project corresponds
to one volume of text. The DjVu page
can be changed by selecting the textbox number with the mouse and over-writing
it with a new number within the range of the index. The pulldown menu can be
accessed by clicking the down arrow to the right of the textbox number. This
opens a scrolling list of all the DjVu page numbers in the index. To go to a
particular page, simply scroll to that page number and reselect it by clicking
with the mouse. To the right of the Page Select tool are a set of left and
right arrow icons. Clicking one of these allows you to navigate immediately
to the first page of the current index, the previous page, the next page,
and the last page of the index. The Windows plug-in also has buttons allowing
to go to the Previous and Next views, that is, pages, positions, or zooms backwards
and forwards in the plug-in history. The UNIX plug-in has buttons for
navigating to a position ten pages back and one ten pages forward.
The "G" keyboard shortcut opens a "Goto page" dialog box
allowing you to type in and go to any page in the index. All of the
navigation functions are also included in the general pop-up menu accessed by
clicking the right mouse button when the DjVu window is selected. (On a
Macintosh you do this by pressing the mouse button while holding down the
|The Navigation Functions of the Plug-in|
The DjVu Plug-in "Find" function is very powerful and useful if used properly.
There are three ways to call it up: by clicking the "binoculars" on the plug-in
toolbar, by typing the letter "f" at the keyboard while the DjVu window is
selected, and through the general pop-up menu accessed by clicking the right
mouse button. The Find function pops up a search form that looks like this:
The default for Windows and Macintosh is to search in the current page. To
search through more than one page, you must select the radio button labeled
"Document". UNIX plug-ins, on the other hand, default to "Search all pages."
To change this behavior on UNIX, you must "uncheck" the checkbox option. We
strongly recommend using the Find function to search the current page
or a close range of pages for common words, and not using it to search
through an entire volume! Actually, the plug-in Find function searches
quickly enough through downloaded pages, but we need to remember that with
indexed documents, such as those of The Spectator Project, the
plug-in downloads as few pages as possible at a time, typically only the current
page and the page on either side, to allow the document to display quickly
and to ease navigation. If the Find function is asked to search the entire
document and does not find the search query in the downloaded pages, it will
continue to download page after page until it finds an instance of the query
or reaches the end of the document. With a large document this can be
unacceptably (and in the case of The Spectator Project
unnecessarily) slow. The full-text "Search" function, on the
other hand, uses an outside index that allows it to search very rapidly
through all the volumes of The Spectator Project and return pointers immediately to
all the pages where a query is to be found. The Find function is mostly useful
after such a search for finding and highlighting the search query on a
targeted page. On all platforms, the plug-in Find function allows you to
search forwards or backwards and to specify case-sensitivity by checking the
appropriate options on the search form.
|The Find Function of the Plug-in|
The official plug-in help pages provide a full list of the many "keyboard
shortcuts" available with the plugin. Here we will simply highlight a few of
these that are especially helpful in viewing The Spectator Project.
As was mentioned above, the "1", "2", and "3" keys can be used to change the zoom of
a page very quickly to 100%, 200%, and 300% respectively. The "+" and "-" keys
zoom up and down by steps. The "W" key zooms to "Fit Width" and the "P" key zooms
to "Fit Page" The "Up," "Down," "Left," and "Right" keys, as well as the
corresponding arrow keys can be used to scroll the page in a given direction.
"Page Up" and "Page Down" move up and down a page and move to the previous or
next pages when a page boundary is found. "Enter" is like "Page Down" while
"Space" goes to the next page. "Backspace" always goes to the previous page.
The "CTRL-F," "F," "f," and "F3" keys all call up the Find function window.
Finally, the "?" key displays the official DjVu Plug-in help pages.
|Helpful Keyboard Shortcuts|
Whether you are a "keyboard person" or a "mouse person," we think you will
find the DjVu Plug-in simple and fun to use as you explore The Spectator Project.