README-General
1This program is written in Tcl/TK and so is in principle
2portable to just about any environment. It was actually
3written and primarily tested on GNU/Linux systems. It is
4known to run under FreeBSD, SunOS, Mac OS X and Microsoft
5Windows (using cygwin).
6
7It requires wish, the tcl/tk windowing shell, to run.
8Naturally, the availability of particular programs for
9matching regular expressions depends on what is installed on
10your system. Only the core tcl/tk package is required; no
11extensions are used.
12
13A secondary dependency is the dillo browser. A browser is
14invoked in parts of the help system. Dillo was chosen
15as the default because it is very lightweight, starts quickly,
16is free (in both senses), and runs on all major platforms.
17You can set a different default browser if you wish to
18in your init file. If the default browser is not found,
19redet will try a series of alternatives.
20
21On Unix systems, the program file redet can be made
22executable by: (a) copying into a directory on your path;
23(b) marking the file as executable: chmod 755 redet.tcl;
24
25You may wish to rename redet.tcl as redet.
26
27If running under cygwin on Microsoft Windows, you may need
28to set your TMP environment variable to "/cygdrive/c/tmp".
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README-MacOSX
1This program uses the Tk windowing/graphics library. There
2are two implementations of Tk for Mac OS X. One, Tk-X11, is
3built on top of the X11 window system. This version of Tk
4is very similar to Tk on other platforms, including
5GNU/Linux, on which this program has been developed. If you
6want the program to work as closely as possible to its
7design, you should install X11 and Tk-X11.
8
9Tk-Aqua is built on top of Aqua, the native
10windowing/graphics system for Mac OS X. If you use Tk-Aqua,
11you will get a look-and-feel that is closer to that of other
12native Macintosh programs than if you use Tk-X11. The
13downside is that, by enforcing a numver of user interface
14design decisions made by Apple, Tk-Aqua cannot do some
15things that Tk-X11 can. Among the differences are the
16following:
17
18(a) Tk-Aqua will only put menus on the menubar. It refuses to put
19 command buttons on the menubar.
20
21(b) Tk-Aqua does not support multi-column menus.
22
23(c) Tk-Aqua does not support multi-line button labels.
24
25The most import of these is the first. This program makes
26use of commands on the menubar. If it is run unmodified
27under Tk-Aqua, these commands are simply omitted. In order
28to allow the program to be used under Tk-Aqua, if it detects
29that it is running under Tk-Aqua, it creates a menubar of
30its own at the top of the window containing buttons for
31these commands. The other menubar entries are put on the
32usual Mac menu at the top of the screen. This makes the
33commands accessible at the expense of splitting the menu
34into two parts.
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