declare smobs in alloc.c
[bpt/emacs.git] / etc / enriched.txt
1 Content-Type: text/enriched
2 Text-Width: 70
3
4 <center><x-bg-color><param>blue</param><x-color><param>white</param><bold><fixed>enriched.el:</fixed></bold></x-color></x-bg-color>
5
6 <x-bg-color><param>blue</param><x-color><param>white</param><bold>WYSIWYG rich text editing for GNU Emacs</bold></x-color></x-bg-color>
7
8
9 </center><bold><x-bg-color><param>blue</param><x-color><param>white</param>INTRODUCTION</x-color></x-bg-color></bold>
10
11
12
13 <indent>Emacs has the ability to edit <italic>enriched text</italic>, which is text
14 containing faces, colors, indentation, and other properties.
15 This document is a quick introduction to some of the features,
16 and is also an example file in the <italic>text/enriched </italic>format.</indent>
17
18
19 <x-bg-color><param>blue</param><x-color><param>white</param><bold>INSTALLATION and STARTUP</bold></x-color></x-bg-color>
20
21
22 <indent>Most of the time, you need not do anything to get these features
23 to work. If you visit a file that has been written out in
24 <italic>text/enriched</italic> format, it will automatically be decoded, Emacs will
25 enter `enriched-mode' while visiting it, and whenever you save it
26 it will be saved in the same format it was read in.
27
28 If you wish to create a new file, however, you will need to turn
29 on enriched-mode yourself:
30
31
32 <fixed><indent>M-x enriched-mode RET</indent></fixed>
33
34
35 Or, if you get a <italic>text/enriched </italic>file that Emacs does not
36 automatically recognize and decode, you can tell Emacs to decode
37 it (which also turns on enriched-mode automatically):
38
39
40 <fixed><indent>M-x format-decode-buffer RET text/enriched RET</indent></fixed></indent>
41
42
43
44 <x-bg-color><param>blue</param><x-color><param>white</param><bold>WHAT IS ENCODED</bold></x-color></x-bg-color>
45
46
47 <indent>Here is the current list of text-properties that are saved; they
48 are discussed in more detail below. Most of these can be added or
49 changed with the "Text Properties" menu, available under the
50 "Edit" item in the menu-bar, or on C-mouse-2 (Control + the middle
51 mouse button).
52
53 <bold>Faces:</bold> <indent>default, <bold>bold</bold>, <italic>italic</italic>, <underline>underline</underline>, etc.</indent>
54
55 <bold>Colors:</bold> <x-color><param>red</param><x-bg-color><param>DarkSlateGray</param><indent>any</indent></x-bg-color></x-color><x-bg-color><param>DarkSlateGray</param><indent><x-color><param>orange</param>thing</x-color> <x-color><param>yellow</param>your</x-color><x-color><param>green</param> screen</x-color><x-color><param>blue</param> </x-color><x-color><param>light blue</param>can</x-color><x-color><param>violet</param> display...</x-color></indent></x-bg-color>
56
57 <bold>Newlines:</bold> <indent>Which ones are real ("hard") newlines, and which can be
58 changed to fit lines into the margins.</indent>
59
60 <bold>Margins:</bold> <indent>can be indented on the left or right.</indent>
61
62 <bold>Justification</bold> <indent>(whether lines should be flush with the left margin,
63 the right margin, fully justified, centered, or left alone).</indent>
64
65 <bold>Excerpts:</bold><indent> <excerpt>"For quoted material."</excerpt></indent>
66
67 <bold>Read-only</bold> regions.
68
69 </indent>
70
71 <x-bg-color><param>blue</param><x-color><param>white</param><bold>FACES and COLORS</bold></x-color></x-bg-color>
72
73
74 <indent>You can add faces either with the menu or with <fixed>M-o.</fixed> The face is
75 applied to the current region. If you are using
76 `transient-mark-mode' and the region is not active, then the face
77 applies to whatever you type next. Any face can have colors. If
78 this is its lone attribute, the face is put on the color submenus
79 of the "Text Properties" menu.</indent>
80
81
82 <x-bg-color><param>blue</param><x-color><param>white</param><bold>NEWLINES and PARAGRAPHS</bold></x-color></x-bg-color>
83
84
85 <italic><indent>Text/enriched</indent></italic><indent> format distinguishes between <underline>hard</underline> and <underline>soft</underline> newlines.
86 Hard newlines are used to separate paragraphs, or items in a list,
87 or anywhere that must be a line break no matter what the margins
88 are. Soft newlines are the ones inserted in order to fit text
89 between the margins. The fill and auto-fill functions insert soft
90 newlines as necessary, but hard newlines are only inserted by
91 direct request, such as using the return key or the <fixed>C-o
92 (open-line)</fixed> function.</indent>
93
94
95 <x-bg-color><param>blue</param><x-color><param>white</param><bold>INDENTATION</bold></x-color></x-bg-color>
96
97
98 <indent>The fill functions also understand margins, which can be set for
99 any region of a document. In addition to the menu items, which
100 increase or decrease the margins, there are two commands for
101 setting the margins absolutely: <fixed>C-c [ (set-left-margin)</fixed> and <fixed>C-c
102 ] (set-right-margin)</fixed>.
103
104
105 You <indent>can change indentation at any point in a paragraph, which
106 makes it possible to do interesting things like
107 hanging-indents: this paragraph was indented by selecting the
108 region from the second word to the end of the paragraph, and
109 indenting only that part.</indent></indent>
110
111
112 <x-bg-color><param>blue</param><x-color><param>white</param><bold>JUSTIFICATION</bold></x-color></x-bg-color>
113
114
115
116 <indent><nofill>Several styles of justification are possible, the simplest being <italic>unfilled.
117 </italic>This means that your lines will be left as you write them.
118 This paragraph is unfilled.</nofill>
119
120
121 <flushleft>The most common (for English) style is <italic>FlushLeft. </italic>This means
122 lines are aligned at the left margin but left uneven at the right.</flushleft>
123
124
125 <flushright> <italic>FlushRight</italic> makes each line flush with the right margin instead.
126 This paragraph is FlushRight.</flushright>
127
128
129
130 <flushboth><italic>FlushBoth </italic>regions, which are sometimes called "fully justified"
131 are aligned evenly on both edges, so that the text on the page has
132 a smooth appearance as in a book or newspaper article.
133 Unfortunately this does not look as nice with a fixed-width font
134 as it does in a proportionally-spaced printed document; the extra
135 spaces that are needed on the screen can make it hard to read. </flushboth>
136
137 <center>
138
139 <bold>Center</bold>
140
141 Finally, there is <italic>center </italic>justification. The normal
142 center-paragraph key, M-S, can be used to turn on center
143 justification in enriched-mode.
144
145 M-j or the "Text Properties" menu also can be used to change
146 justification.
147
148
149
150 </center><flushboth>Note that justification can only change at hard newlines, because
151 that is the unit over which filling gets done. </flushboth></indent>
152
153
154 <x-bg-color><param>blue</param><x-color><param>white</param><bold>EXCERPTS</bold></x-color></x-bg-color>
155
156
157 <excerpt><indent>This is an example of an excerpt. You can use them for quoted
158 parts of other people's email messages and the like. It is just a
159 face, which is the same as the `italic' face by default.</indent></excerpt>
160
161
162 <x-bg-color><param>blue</param><x-color><param>white</param><bold>THE FILE FORMAT</bold></x-color></x-bg-color>
163
164
165 <indent>Enriched-mode documents are saved in an extended version of a
166 format called <italic>text/enriched</italic>, which is defined as part of the MIME
167 standard. This means that your documents are transportable (even
168 through email) to many other systems. In the future other file
169 formats may be supported as well.
170
171
172 Since Emacs adds some non-standard features to the format (colors
173 and read-only regions), not all systems will be able to recreate
174 all of the features of your document, but they will get as close
175 as possible.
176
177
178 The text/enriched standard is defined in </indent>Internet<indent> RFC 1896
179 (<<http://www.ietf.org/rfc/rfc1896.txt>).</indent></indent>
180
181
182 <x-bg-color><param>blue</param><x-color><param>white</param><bold>CUSTOMIZATION</bold></x-color></x-bg-color><bold>
183
184
185 </bold><indent>-<indent> The <fixed>fixed </fixed>and <excerpt>excerpt </excerpt>faces should be set to your liking.</indent>
186
187 -<indent> User-preference variables: <fixed>default-justification,
188 enriched-verbose.
189
190 </fixed></indent>-<indent> You can add annotations for your own text properties by making
191 additions to <fixed>enriched-translations</fixed>. Note that the standard
192 requires you to name your annotation starting<italic> "x-" </italic>(as in
193 <italic>"x-read-only"</italic>). Please report any such additions that you
194 think might be of general interest using <fixed>M-x report-emacs-bug</fixed>.</indent>
195
196 </indent>
197
198 <x-bg-color><param>blue</param><x-color><param>white</param><bold>TODO LIST</bold></x-color></x-bg-color>
199
200
201 <italic><indent>[Feel free to work on these and send us the results!]</indent></italic><indent>
202
203 + Conform to updated text/enriched spec in RFC 1896.
204
205 + Be smarter about fixing malformed files.
206
207 + Make the indentation work more seamlessly and robustly:
208
209 + Create<indent> an aggressive auto-fill function that will keep the
210 paragraph properly filled all the time, without slowing down
211 editing too much. Refill mode is a start at this, but needs
212
213 </indent></indent> <indent>improvement.
214
215 + Refill after yank. [Refill mode does that.]
216
217 +<indent> Make deleting a newline also delete the indentation following
218 it.</indent>
219
220 + Never let point enter indentation??
221
222 + Notice and re-fill when window changes widths (optionally).
223
224 + Deal with the `category' text-property in a smart way.
225
226 + Interface w/ Gnus, VM, RMAIL. Maybe Info too? </indent>(Gnus 5.9 copes
227
228 with text/enriched incoming mail.)<indent>
229
230 + Support more formats: RTF, HTML...
231
232 + Use modern Emacs display features.
233
234 </indent>
235
236 <x-bg-color><param>blue</param><x-color><param>white</param><bold>Original Author:</bold></x-color></x-bg-color>
237
238
239 <bold><x-color><param>white</param><x-bg-color><param>blue</param>Boris Goldowsky</x-bg-color></x-color><x-color><param>light blue</param> </x-color></bold><x-color><param>light blue</param><fixed><<boris@gnu.ai.mit.edu></fixed></x-color><x-color><param>blue</param>
240
241
242 \f
243 Copyright (C) 1995, 1997, 2001-2014 Free Software Foundation, Inc.
244
245 COPYING PERMISSIONS:
246
247 This document is free software: you can redistribute it and/or modify
248 it under the terms of the GNU General Public License as published by
249 the Free Software Foundation, either version 3 of the License, or
250 (at your option) any later version.
251
252 This program is distributed in the hope that it will be useful,
253 but WITHOUT ANY WARRANTY; without even the implied warranty of
254 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
255 GNU General Public License for more details.
256
257 You should have received a copy of the GNU General Public License
258 along with this program. If not, see <<http://www.gnu.org/licenses/>.