1ESTRAIER(3) Hyper Estraier ESTRAIER(3)
2
6 estraier.h - the core API of Hyper Estraier
7
10 #include <estraier.h>
11 #include <cabin.h>
12 #include <stdlib.h>
13
16 The API for documents aims to handle documents which were registered
17 into the index.
18 The type of the structure `ESTDOC' is for abstraction of a document. A
20 document is composed of some attributes and some text sentences. No
21 entity of `ESTDOC' is accessed directly, but it is accessed by the
22 pointer. The term of document object means the pointer and its refer‐
23 ent. A document object is created by the function `est_doc_new' and
24 destroyed by `est_doc_delete'. Every created document object should be
25 destroyed.
26 Target documents of search are to be registered in the database before‐
28 hand. The ID is assigned to each registered document. When search,
29 they can be retrieved from the database by their ID. The encoding of
30 attributes and text sentences should be UTF-8.
31 The function `est_doc_new' is used in order to create a document
33 object.
34 ESTDOC *est_doc_new(void);
36 The return value is an object of a document.
37 The function `est_doc_new_from_draft' is used in order to create a doc‐
39 ument object made from draft data.
40 ESTDOC *est_doc_new_from_draft(const char *draft);
42 `draft' specifies a string of draft data. The return value is
43 an object of a document.
44 The function `est_doc_delete' is used in order to destroy a document
46 object.
47 void est_doc_delete(ESTDOC *doc);
49 `doc' specifies a document object.
50 The function `est_doc_add_attr' is used in order to add an attribute to
52 a document object.
53 void est_doc_add_attr(ESTDOC *doc, const char *name, const char
55 *value);
56 `doc' specifies a document object. `name' specifies the name of
57 an attribute. `value' specifies the value of the attribute. If
58 it is `NULL', the attribute is removed.
59 The function `est_doc_add_text' is used in order to add a sentence of
61 text to a document object.
62 void est_doc_add_text(ESTDOC *doc, const char *text);
64 `doc' specifies a document object. `text' specifies a sentence
65 of text.
66 The function `est_doc_add_hidden_text' is used in order to add a hidden
68 sentence to a document object.
69 void est_doc_add_hidden_text(ESTDOC *doc, const char *text);
71 `doc' specifies a document object. `text' specifies a hidden
72 sentence.
73 The function `est_doc_set_keywords' is used in order to attach keywords
75 to a document object.
76 void est_doc_set_keywords(ESTDOC *doc, CBMAP *kwords);
78 `doc' specifies a document object. `kwords' specifies a map
79 object of keywords. Keys of the map should be keywords of the
80 document and values should be their scores in decimal string.
81 The map object is copied internally.
82 The function `est_doc_set_score' is used in order to set the substitute
84 score of a document object.
85 void est_doc_set_score(ESTDOC *doc, int score);
87 `doc' specifies a document object. `score' specifies the sub‐
88 stitute score. It it is negative, the substitute score setting
89 is nullified.
90 The function `est_doc_id' is used in order to get the ID number of a
92 document object.
93 int est_doc_id(ESTDOC *doc);
95 `doc' specifies a document object. The return value is the ID
96 number of the document object. If the object has not been reg‐
97 istered, -1 is returned.
98 The function `est_doc_attr_names' is used in order to get a list of
100 attribute names of a document object.
101 CBLIST *est_doc_attr_names(ESTDOC *doc);
103 `doc' specifies a document object. The return value is a new
104 list object of attribute names of the document object. Because
105 the object of the return value is opened with the function
106 `cblistopen', it should be closed with the function `cblist‐
107 close' if it is no longer in use.
108 The function `est_doc_attr' is used in order to get the value of an
110 attribute of a document object.
111 const char *est_doc_attr(ESTDOC *doc, const char *name);
113 `doc' specifies a document object. `name' specifies the name of
114 an attribute. The return value is the value of the attribute or
115 `NULL' if it does not exist. The life duration of the returned
116 string is synchronous with the one of the document object.
117 The function `est_doc_texts' is used in order to get a list of sen‐
119 tences of the text of a document object.
120 const CBLIST *est_doc_texts(ESTDOC *doc);
122 `doc' specifies a document object. The return value is a list
123 object of sentences of the text of the document object. The
124 life duration of the returned object is synchronous with the one
125 of the document object.
126 The function `est_doc_cat_texts' is used in order to concatenate sen‐
128 tences of the text of a document object.
129 char *est_doc_cat_texts(ESTDOC *doc);
131 `doc' specifies a document object. The return value is concate‐
132 nated sentences of the document object. Because the region of
133 the return value is allocated with the `malloc' call, it should
134 be released with the `free' call if it is no longer in use.
135 The function `est_doc_keywords' is used in order to get attached key‐
137 words of a document object.
138 CBMAP *est_doc_keywords(ESTDOC *doc);
140 `doc' specifies a document object. The return value is a map
141 object of keywords and their scores in decimal string. If no
142 keyword is attached, `NULL' is returned. The life duration of
143 the returned object is synchronous with the one of the document
144 object.
145 The function `est_doc_dump_draft' is used in order to dump draft data
147 of a document object.
148 char *est_doc_dump_draft(ESTDOC *doc);
150 `doc' specifies a document object. The return value is draft
151 data of the document object. Because the region of the return
152 value is allocated with the `malloc' call, it should be released
153 with the `free' call if it is no longer in use.
154 The function `est_doc_make_snippet' is used in order to make a snippet
156 of the body text of a document object.
157 char *est_doc_make_snippet(ESTDOC *doc, const CBLIST *words, int
159 wwidth, int hwidth, int awidth);
160 `doc' specifies a document object. `word' specifies a list
161 object of words to be highlight. `wwidth' specifies whole width
162 of the result. `hwidth' specifies width of strings picked up
163 from the beginning of the text. `awidth' specifies width of
164 strings picked up around each highlighted word. The return
165 value is a snippet string of the body text of the document
166 object. There are tab separated values. Each line is a string
167 to be shown. Though most lines have only one field, some lines
168 have two fields. If the second field exists, the first field is
169 to be shown with highlighted, and the second field means its
170 normalized form. Because the region of the return value is
171 allocated with the `malloc' call, it should be released with the
172 `free' call if it is no longer in use.
173
176 The API for search conditions aims to specify search conditions given
177 to the index.
178 The type of the structure `ESTCOND' is for abstraction of search condi‐
180 tions. A unit of search conditions is composed of one search phrase,
181 some attribute expressions, and one order expression. No entity of
182 `ESTCOND' is accessed directly, but it is accessed by the pointer. The
183 term of condition object means the pointer and its referent. A condi‐
184 tion object is created by the function `est_cond_new' and destroyed by
185 `est_cond_delete'. Every created condition object should be destroyed.
186 Condition objects are used as a parameter to search for documents reg‐
188 istered in the database so that a list of IDs of corresponding docu‐
189 ments are returned. See the manual for the formats of expressions.
190 The encoding of conditional expressions should be UTF-8.
191 The function `est_cond_new' is used in order to create a condition
193 object.
194 ESTCOND *est_cond_new(void);
196 The return value is an object of search conditions.
197 The function `est_cond_delete' is used in order to destroy a condition
199 object.
200 void est_cond_delete(ESTCOND *cond);
202 `cond' specifies a condition object.
203 The function `est_cond_set_phrase' is used in order to set the search
205 phrase to a condition object.
206 void est_cond_set_phrase(ESTCOND *cond, const char *phrase);
208 `cond' specifies a condition object. `phrase' specifies a
209 search phrase.
210 The function `est_cond_add_attr' is used in order to add an expression
212 for an attribute to a condition object.
213 void est_cond_add_attr(ESTCOND *cond, const char *expr);
215 `cond' specifies a condition object. `expr' specifies an
216 expression for an attribute.
217 The function `est_cond_set_order' is used in order to set the order of
219 a condition object.
220 void est_cond_set_order(ESTCOND *cond, const char *expr);
222 `cond' specifies a condition object. `expr' specifies an
223 expression for the order. By default, the order is by score
224 descending.
225 The function `est_cond_set_max' is used in order to set the maximum
227 number of retrieval of a condition object.
228 void est_cond_set_max(ESTCOND *cond, int max);
230 `cond' specifies a condition object. `max' specifies the maxi‐
231 mum number of retrieval. By default, the number of retrieval is
232 not limited.
233 The function `est_cond_set_skip' is used in order to set the number of
235 skipped documents of a condition object.
236 void est_cond_set_skip(ESTCOND *cond, int skip);
238 `cond' specifies a condition object. `skip' specifies the num‐
239 ber of documents to be skipped in the search result.
240 The function `est_cond_set_options' is used in order to set options of
242 retrieval of a condition object.
243 void est_cond_set_options(ESTCOND *cond, int options);
245 `cond' specifies a condition object. `options' specifies
246 options: `ESTCONDSURE' specifies that it checks every N-gram
247 key, `ESTCONDUSUAL', which is the default, specifies that it
248 checks N-gram keys with skipping one key, `ESTCONDFAST' skips
249 two keys, `ESTCONDAGITO' skips three keys, `ESTCONDNOIDF' speci‐
250 fies not to perform TF-IDF tuning, `ESTCONDSIMPLE' specifies to
251 use simplified phrase, `ESTCONDROUGH' specifies to use rustic
252 phrase, `ESTCONDUNION' specifies to use union phrase, `ESTCONDI‐
253 SECT' specifies to use intersection phrase, `ESTCONDSCFB' speci‐
254 fies to feed back scores (only for debugging). Each option can
255 be specified at the same time by bitwise or. If keys are
256 skipped, though search speed is improved, the relevance ratio
257 grows less.
258 The function `est_cond_set_auxiliary' is used in order to set permis‐
260 sion to adopt result of the auxiliary index.
261 void est_cond_set_auxiliary(ESTCOND *cond, int min);
263 `cond' specifies a condition object. `min' specifies the mini‐
264 mum hits to adopt result of the auxiliary index. If it is not
265 more than 0, the auxiliary index is not used. By default, it is
266 32.
267 The function `est_cond_set_eclipse' is used in order to set the lower
269 limit of similarity eclipse.
270 void est_cond_set_eclipse(ESTCOND *cond, double limit);
272 `cond' specifies a condition object. `limit' specifies the
273 lower limit of similarity for documents to be eclipsed. Simi‐
274 larity is between 0.0 and 1.0. If the limit is added by `ESTE‐
275 CLSIMURL', similarity is weighted by URL. If the limit is
276 `ESTECLSERV', similarity is ignored and documents in the same
277 server are eclipsed. If the limit is `ESTECLDIR', similarity is
278 ignored and documents in the same directory are eclipsed. If
279 the limit is `ESTECLFILE', similarity is ignored and documents
280 of the same file are eclipsed.
281 The function `est_cond_set_distinct' is used in order to set the
283 attribute distinction filter.
284 void est_cond_set_distinct(ESTCOND *cond, const char *name);
286 `cond' specifies a condition object. `name' specifies the name
287 of an attribute to be distinct. If this filter is set, candi‐
288 dates which have same value of the attribute is omitted.
289 The function `est_set_cond_mask' is used in order to set the mask of
291 targets of meta search.
292 void est_cond_set_mask(ESTCOND *cond, int mask);
294 `cond' specifies a condition object. `mask' specifies a masking
295 number. 1 means the first target, 2 means the second target, 4
296 means the third target, and power values of 2 and their summa‐
297 tion compose the mask.
298
301 The API for database aims to handle the database of the index.
302 The type of the structure `ESTDB' is for abstraction of access methods
304 to database. A database has inverted index, document data, and meta
305 data. One of writer or reader is selected when the connection is
306 established. No entity of `ESTDB' is accessed directly, but it is
307 accessed by the pointer. The term of database object means the pointer
308 and its referent. A database object is created by the function
309 `est_db_open' and destroyed by `est_db_close'. Every created database
310 object should be destroyed.
311 Errors with some operations are informed to by the function
313 `est_db_error'. The meaning of each error code can be gotten as a
314 string by the function `est_err_msg'.
315 The following constant are defined for error codes.
317 The function `est_err_msg' is used in order to get the string of an
319 error code.
320 const char *est_err_msg(int ecode);
322 `ecode' specifies an error code. The return value is the string
323 of the error code.
324 The function `est_db_open' is used in order to open a database.
326 ESTDB *est_db_open(const char *name, int omode, int *ecp);
328 `name' specifies the name of a database directory. `omode'
329 specifies open modes: `ESTDBWRITER' as a writer, `ESTDBREADER'
330 as a reader. If the mode is `ESTDBWRITER', the following may be
331 added by bitwise or: `ESTDBCREAT', which means it creates a new
332 database if not exist, `ESTDBTRUNC', which means it creates a
333 new database regardless if one exists. Both of `ESTDBREADER'
334 and `ESTDBWRITER' can be added to by bitwise or: `ESTDBNOLCK',
335 which means it opens a database file without file locking, or
336 `ESTDBLCKNB', which means locking is performed without blocking.
337 If `ESTDBNOLCK' is used, the application is responsible for
338 exclusion control. `ESTDBCREAT' can be added to by bitwise or:
339 `ESTDBPERFNG', which means N-gram analysis is performed against
340 European text also, `ESTDBCHRCAT', which means character cate‐
341 gory analysis is performed instead of N-gram analysis, `ESTDBS‐
342 MALL', which means the index is tuned to register less than
343 50000 documents, `ESTDBLARGE', which means the index is tuned to
344 register more than 300000 documents, `ESTDBHUGE', which means
345 the index is tuned to register more than 1000000 documents,
346 `ESTDBHUGE2', which means the index is tuned to register more
347 than 5000000 documents, `ESTDBHUGE3', which means the index is
348 tuned to register more than 10000000 documents, `ESTDBSCVOID',
349 which means scores are stored as void, `ESTDBSCINT', which means
350 scores are stored as 32-bit integer, `ESTDBSCASIS', which means
351 scores are stored as-is and marked not to be tuned when search.
352 `ecp' specifies the pointer to a variable to which the error
353 code is assigned. The return value is a database object of the
354 database or `NULL' if failure.
355 The function `est_db_close' is used in order to close a database.
357 int est_db_close(ESTDB *db, int *ecp);
359 `db' specifies a database object. `ecp' specifies the pointer
360 to a variable to which the error code is assigned. The return
361 value is true if success, else it is false.
362 The function `est_db_error' is used in order to get the last happened
364 error code of a database.
365 int est_db_error(ESTDB *db);
367 `db' specifies a database object. The return value is the last
368 happened error code of the database.
369 The function `est_db_fatal' is used in order to check whether a data‐
371 base has a fatal error.
372 int est_db_fatal(ESTDB *db);
374 `db' specifies a database object. The return value is true if
375 the database has fatal error, else it is false.
376 The function `est_db_add_attr_index' is used in order to add an index
378 for narrowing or sorting with document attributes.
379 int est_db_add_attr_index(ESTDB *db, const char *name, int type);
381 `db' specifies a database object connected as a writer. `name'
382 specifies the name of an attribute. `type' specifies the data
383 type of attribute index; `ESTIDXATTRSEQ' for multipurpose
384 sequencial access method, `ESTIDXATTRSTR' for narrowing with
385 attributes as strings, `ESTIDXATTRNUM' for narrowing with
386 attributes as numbers. The return value is true if success,
387 else it is false. Note that this function should be called
388 before the first document is registered.
389 The function `est_db_flush' is used in order to flush index words in
391 the cache of a database.
392 int est_db_flush(ESTDB *db, int max);
394 `db' specifies a database object connected as a writer. `max'
395 specifies the maximum number of words to be flushed. If it not
396 more than zero, all words are flushed. The return value is true
397 if success, else it is false.
398 The function `est_db_sync' is used in order to synchronize updating
400 contents of a database.
401 int est_db_sync(ESTDB *db);
403 `db' specifies a database object connected as a writer. The
404 return value is true if success, else it is false.
405 The function `est_db_optimize' is used in order to optimize a database.
407 int est_db_optimize(ESTDB *db, int options);
409 `db' specifies a database object connected as a writer.
410 `options' specifies options: `ESTOPTNOPURGE' to omit purging
411 dispensable region of deleted documents, `ESTOPTNODBOPT' to omit
412 optimization of the database files. The three can be specified
413 at the same time by bitwise or. The return value is true if
414 success, else it is false.
415 The function `est_db_merge' is used in order to merge another database.
417 int est_db_merge(ESTDB *db, const char *name, int options);
419 `db' specifies a database object connected as a writer. `name'
420 specifies the name of another database directory. `options'
421 specifies options: `ESTMGCLEAN' to clean up dispensable regions
422 of the deleted document. The return value is true if success,
423 else it is false. Creation options of the two databases should
424 be same entirely. ID numbers of imported documents are changed
425 within the sequence of the desitination database. If URIs of
426 imported documents conflict ones of exsisting documents, exist‐
427 ing documents are removed.
428 The function `est_db_put_doc' is used in order to add a document to a
430 database.
431 int est_db_put_doc(ESTDB *db, ESTDOC *doc, int options);
433 `db' specifies a database object connected as a writer. `doc'
434 specifies a document object. The document object should have
435 the URI attribute. `options' specifies options: `ESTPDCLEAN' to
436 clean up dispensable regions of the overwritten document, `EST‐
437 PDWEIGHT' to weight scores statically with score weighting
438 attribute. The return value is true if success, else it is
439 false. If the URI attribute is same with an existing document
440 in the database, the existing one is deleted.
441 The function `est_db_out_doc' is used in order to remove a document
443 from a database.
444 int est_db_out_doc(ESTDB *db, int id, int options);
446 `db' specifies a database object connected as a writer. `id'
447 specifies the ID number of a registered document. `options'
448 specifies options: `ESTODCLEAN' to clean up dispensable regions
449 of the deleted document. The return value is true if success,
450 else it is false.
451 The function `est_db_edit_doc' is used in order to edit attributes of a
453 document in a database.
454 int est_db_edit_doc(ESTDB *db, ESTDOC *doc);
456 `db' specifies a database object connected as a writer. `doc'
457 specifies a document object. The return value is true if suc‐
458 cess, else it is false. The ID can not be changed. If the URI
459 is changed and it overlaps the URI of another registered docu‐
460 ment, this function fails.
461 The function `est_db_get_doc' is used in order to retrieve a document
463 in a database.
464 ESTDOC *est_db_get_doc(ESTDB *db, int id, int options);
466 `db' specifies a database object. `id' specifies the ID number
467 of a registered document. `options' specifies options: `EST‐
468 GDNOATTR' to ignore attributes, `ESTGDNOTEXT' to ignore the body
469 text, `ESTGDNOKWD' to ignore keywords. The two can be specified
470 at the same time by bitwise or. The return value is a document
471 object. It should be deleted with `est_doc_delete' if it is no
472 longer in use. On error, `NULL' is returned.
473 The function `est_db_get_doc_attr' is used in order to retrieve the
475 value of an attribute of a document in a database.
476 char *est_db_get_doc_attr(ESTDB *db, int id, const char *name);
478 `db' specifies a database object. `id' specifies the ID number
479 of a registered document. `name' specifies the name of an
480 attribute. The return value is the value of the attribute or
481 `NULL' if it does not exist. Because the region of the return
482 value is allocated with the `malloc' call, it should be released
483 with the `free' call if it is no longer in use.
484 The function `est_db_uri_to_id' is used in order to get the ID of a
486 document specified by URI.
487 int est_db_uri_to_id(ESTDB *db, const char *uri);
489 `db' specifies a database object. `uri' specifies the URI of a
490 registered document. The return value is the ID of the docu‐
491 ment. On error, -1 is returned.
492 The function `est_db_name' is used in order to get the name of a data‐
494 base.
495 const char *est_db_name(ESTDB *db);
497 `db' specifies a database object. The return value is the name
498 of the database. The life duration of the returned string is
499 synchronous with the one of the database object.
500 The function `est_db_doc_num' is used in order to get the number of
502 documents in a database.
503 int est_db_doc_num(ESTDB *db);
505 `db' specifies a database object. The return value is the num‐
506 ber of documents in the database.
507 The function `est_db_word_num' is used in order to get the number of
509 unique words in a database.
510 int est_db_word_num(ESTDB *db);
512 `db' specifies a database object. The return value is the num‐
513 ber of unique words in the database.
514 The function `est_db_size' is used in order to get the size of a data‐
516 base.
517 double est_db_size(ESTDB *db);
519 `db' specifies a database object. The return value is the size
520 of the database.
521 The function `est_db_search' is used in order to search a database for
523 documents corresponding a condition.
524 int *est_db_search(ESTDB *db, ESTCOND *cond, int *nump, CBMAP *hints);
526 `db' specifies a database object. `cond' specifies a condition
527 object. `nump' specifies the pointer to a variable to which the
528 number of elements in the result is assigned. `hints' specifies
529 a map object into which the number of documents corresponding to
530 each word is stored. If a word is in a negative condition, the
531 number is negative. The element whose key is an empty string
532 specifies the number of whole result. If it is `NULL', it is
533 not used. The return value is an array whose elements are ID
534 numbers of corresponding documents. This function does never
535 fail. Even if no document corresponds or an error occurs, an
536 empty array is returned. Because the region of the return value
537 is allocated with the `malloc' call, it should be released with
538 the `free' call if it is no longer in use.
539 Search plural databases for documents corresponding a condition.
541 int *est_db_search_meta(ESTDB **dbs, int dbnum, ESTCOND *cond, int
543 *nump, CBMAP *hints);
544 `dbs' specifies an array whose elements are database objects.
545 `dbnum' specifies the number of elements of the array. `cond'
546 specifies a condition object. `nump' specifies the pointer to a
547 variable to which the number of elements in the result is
548 assigned. `hints' specifies a map object into which the number
549 of documents corresponding to each word is stored. If a word is
550 in a negative condition, the number is negative. The element
551 whose key is an empty string specifies the number of whole
552 result. If it is `NULL', it is not used. The return value is
553 an array whose elements are indexes of container databases and
554 ID numbers of in each database alternately. This function does
555 never fail. Even if no document corresponds or an error occurs,
556 an empty array is returned. Because the region of the return
557 value is allocated with the `malloc' call, it should be released
558 with the `free' call if it is no longer in use.
559 The function `est_db_scan_doc' is used in order to check whether a doc‐
561 ument object matches the phrase of a search condition object defi‐
562 nitely.
563 int est_db_scan_doc(ESTDB *db, ESTDOC *doc, ESTCOND *cond);
565 `db' specifies a database object. `doc' specifies a document
566 object. `cond' specifies a search condition object. The return
567 value is true if the document matches the phrase of the condi‐
568 tion object definitely, else it is false.
569 The function `est_db_set_cache_size' is used in order to set the maxi‐
571 mum size of the cache memory of a database.
572 void est_db_set_cache_size(ESTDB *db, size_t size, int anum, int tnum,
574 int rnum);
575 `db' specifies a database object. `size' specifies the maximum
576 size of the index cache. By default, it is 64MB. If it is neg‐
577 ative, the current size is not changed. `anum' specifies the
578 maximum number of cached records for document attributes. By
579 default, it is 8192. If it is negative, the current size is not
580 changed. `tnum' specifies the maximum number of cached records
581 for document texts. By default, it is 1024. If it is negative,
582 the current size is not changed. `rnum' specifies the maximum
583 number of cached records for occurrence results. By default, it
584 is 256. If it is negative, the current size is not changed.
585
588 Databases of Hyper Estraier are protected by file locking. While a
589 writer is connected to a database, neither readers nor writers can be
590 connected. While a reader is connected to a database, other readers
591 can be connect, but writers can not.
592 If you use multi thread, it is suggested to use the MT-safe API of
594 Hyper Estraier. It is a wrapper to make the core API thread-safe. As
595 the MT-safe API provides the same functions as with the core API, the
596 following is different.
597
600 Hyper Estraier is written by Mikio Hirabayashi. You can contact the
601 author by e-mail to <mikio@users.sourceforge.net>. Any suggestion or
602 bug report is welcome to the author.
603
606 Hyper Estraier was developed under management by Fumitoshi Ukai and
607 supports by Exploratory Software Project of Information-technology Pro‐
608 motion Agency, Japan (IPA).
609
612 Copyright (C) 2004-2007 Mikio Hirabayashi
613 Hyper Estraier is free software; you can redistribute it and/or modify
615 it under the terms of the GNU Lesser General Public License as pub‐
616 lished by the Free Software Foundation; either version 2 of the
617 License, or any later version.
618 Hyper Estraier is distributed in the hope that it will be useful, but
620 WITHOUT ANY WARRANTY; without even the implied warranty of MER‐
621 CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
622 General Public License for more details.
623 You should have received a copy of the GNU Lesser General Public
625 License along with Hyper Estraier; if not, write to the Free Software
626 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
627 USA.
628
631 estconfig(1), estcmd(1), estmaster(1), estcall(1), estwaver(1),
632 cabin(3), estnode(3)
633 Please see http://hyperestraier.sourceforge.net/pguide-en.html for
635 detail.
636Man Page 2007-03-06 ESTRAIER(3)