1      A standard dictionary is incorporated in the Multics system; this
 2 dictionary can be used to hyphenate words at the end of a line, and it can be
 3 used to check spelling.
 4 
 5      Hyphenation is preformed by the -hyphenate control argument to the
 6 compose command.  Use of this control argument causes compose to compare words
 7 in the composing document with the Multics dictionary and any of your own
 8 dictionaries.  If a specific word is in a dictionary and can be hyphenated,
 9 the compose command, if necessary, will use a portion of that hyphenated word
10 to fill a line.
11 
12      You can create your own dictionary with the add_dict_words command.  For
13 example:
14 
15 add_dict_words mywords.dict brave fort con-ceived
16 
17 where 'mywords.dict' (the suffix '.dict' is required) is the name of the
18 dictionary and 'brave,' 'fort,' and 'con-ceived' are words to be included in
19 it.  The hyphen in 'con-ceived' indicates that the word may be hyphenated there
20 if necessary.
21 
22      To have compose use your dictionary, you must include it in the "search
23 paths."  This is done with the add_search_paths command.  For example:
24 
25 add_search_paths dict mywords.dict
26 
27 This adds the dictionary named 'mywords.dict' to the search path named 'dict,'
28 which also contains the standard Multics dictionary.
29 
30      The first step toward checking the spelling of words in a document is to
31 create a list of all the words in the "segment" that stores the document.  You
32 create the list with the create_wordlist command.  For example:
33 
34 create_wordlist letter_seg.compin
35 
36 causes all the words in the segment named 'letter_seg.compin' to be counted
37 and all duplicated words to be discarded.  The remaining words are put in a
38 wordlist segment whose name is the name you gave the create_wordlist command
39 plus the suffix '.wl' (e.g., letter_seg.compin.wl).  Then you invoke the
40 trim_wordlist command with the wordlist you've just created.  This command
41 compares all the words in the wordlist with the words in the standard
42 dictionary and any dictionaries you've added to the dict search path and
43 discards from the wordlist all those words that appear in the dictionaries.
44 
45      Because words in the wordlist are compared to those in the dictionaries,
46 you can be sure that the discarded words are spelled correctly.  It is among
47 those that did not have an exact match with dictionary words that you may find
48 misspellings.  To check these remaining words, print them out with the
49 print_wordlist command.  The list printed by this command includes the words
50 only; it does not locate them in the text.  To do that, use the locate words
51 command.  For example, if you find the misspelled word 'tens,' you would type:
52 
53 locate_words letter_seg.compin tens
54 
55 You will then be told which line the word 'tens' appears on.
56 
57      You can correct spelling mistakes with the revise_words command.  For
58 example, to change the spelling of 'tens' to 'ten,' type:
59 
60 revise_words letter_seg.compin tens ten
61 
62 This command goes to the segment named on the command line and substitutes
63 every instance of the first word with the second word.  And the revise_words
64 command works on complete words only, so you needn't worry that any instance
65 of the characters named in the first position that appears correctly within
66 any word will be changed to the spelling of the second word.  For example, the
67 word 'intense' would not be changed to 'intene' by the above use of the
68 revise_words command.