324 lines
10 KiB
Groff
324 lines
10 KiB
Groff
.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining
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.\" a copy of this software and associated documentation files (the
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.\" "Software"), to deal in the Software without restriction, including
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.\" without limitation the rights to use, copy, modify, merge, publish,
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.\" distribute, sublicense, and/or sell copies of the Software, and to
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.\" permit persons to whom the Software is furnished to do so, subject to
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.\" the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be included
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.\" in all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
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.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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.\" OTHER DEALINGS IN THE SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall
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.\" not be used in advertising or otherwise to promote the sale, use or
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.\" other dealings in this Software without prior written authorization
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.\" from the X Consortium.
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.\"
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.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
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.\" Digital Equipment Corporation
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.\"
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.\" Portions Copyright \(co 1990, 1991 by
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.\" Tektronix, Inc.
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.\"
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.\" Permission to use, copy, modify and distribute this documentation for
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.\" any purpose and without fee is hereby granted, provided that the above
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.\" copyright notice appears in all copies and that both that copyright notice
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.\" and this permission notice appear in all copies, and that the names of
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.\" Digital and Tektronix not be used in in advertising or publicity pertaining
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.\" to this documentation without specific, written prior permission.
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.\" Digital and Tektronix makes no representations about the suitability
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.\" of this documentation for any purpose.
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.\" It is provided ``as is'' without express or implied warranty.
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.\"
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.\"
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft 1
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.TH XrmGetFileDatabase __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
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.SH NAME
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XrmGetFileDatabase, XrmPutFileDatabase, XrmGetStringDatabase, XrmLocaleOfDatabase, XrmGetDatabase, XrmSetDatabase, XrmDestroyDatabase \- retrieve and store resource databases
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.SH SYNTAX
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.HP
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XrmDatabase XrmGetFileDatabase\^(\^char *\fIfilename\fP\^);
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.HP
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void XrmPutFileDatabase\^(\^XrmDatabase \fIdatabase\fP\^, char
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*\fIstored_db\fP\^);
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.HP
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XrmDatabase XrmGetStringDatabase\^(\^char *\fIdata\fP\^,
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.HP
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char *XrmLocaleOfDatabase\^(\^XrmDatabase \fIdatabase\fP\^);
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.HP
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XrmDatabase XrmGetDatabase\^(\^Display *\fIdisplay\fP\^);
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.HP
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void XrmSetDatabase\^(\^Display *\fIdisplay\fP\^, XrmDatabase
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\fIdatabase\fP\^);
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.HP
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void XrmDestroyDatabase\^(\^XrmDatabase \fIdatabase\fP\^);
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.SH ARGUMENTS
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.IP \fIfilename\fP 1i
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Specifies the resource database file name.
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.IP \fIdatabase\fP 1i
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Specifies the database that is to be used.
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.IP \fIstored_db\fP 1i
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Specifies the file name for the stored database.
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.IP \fIdata\fP 1i
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Specifies the database contents using a string.
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.IP \fIdatabase\fP 1i
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Specifies the resource database.
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.IP \fIdisplay\fP 1i
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Specifies the connection to the X server.
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.SH DESCRIPTION
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The
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.ZN XrmGetFileDatabase
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function opens the specified file,
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creates a new resource database, and loads it with the specifications
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read in from the specified file.
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The specified file should contain a sequence of entries in valid ResourceLine
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format (see section 15.1); the database that results from reading a file
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with incorrect syntax is implementation-dependent.
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The file is parsed in the current locale,
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and the database is created in the current locale.
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If it cannot open the specified file,
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.ZN XrmGetFileDatabase
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returns NULL.
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.LP
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The
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.ZN XrmPutFileDatabase
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function stores a copy of the specified database in the specified file.
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Text is written to the file as a sequence of entries in valid
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ResourceLine format (see section 15.1).
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The file is written in the locale of the database.
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Entries containing resource names that are not in the Host Portable Character
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Encoding or containing values that are not in the encoding of the database
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locale, are written in an implementation-dependent manner.
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The order in which entries are written is implementation-dependent.
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Entries with representation types other than ``String'' are ignored.
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.LP
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The
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.ZN XrmGetStringDatabase
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function creates a new database and stores the resources specified
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in the specified null-terminated string.
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.ZN XrmGetStringDatabase
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is similar to
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.ZN XrmGetFileDatabase
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except that it reads the information out of a string instead of out of a file.
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The string should contain a sequence of entries in valid ResourceLine
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format (see section 15.1) terminated by a null character;
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the database that results from using a string
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with incorrect syntax is implementation-dependent.
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The string is parsed in the current locale,
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and the database is created in the current locale.
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.LP
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If database is NULL,
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.ZN XrmDestroyDatabase
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returns immediately.
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.LP
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The
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.ZN XrmLocaleOfDatabase
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function returns the name of the locale bound to the specified
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database, as a null-terminated string.
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The returned locale name string is owned by Xlib and should not be
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modified or freed by the client.
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Xlib is not permitted to free the string until the database is destroyed.
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Until the string is freed,
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it will not be modified by Xlib.
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.LP
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The
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.ZN XrmGetDatabase
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function returns the database associated with the specified display.
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It returns NULL if a database has not yet been set.
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.LP
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The
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.ZN XrmSetDatabase
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function associates the specified resource database (or NULL)
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with the specified display.
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The database previously associated with the display (if any) is not destroyed.
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A client or toolkit may find this function convenient for retaining a database
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once it is constructed.
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.SH "FILE SYNTAX"
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The syntax of a resource file is a sequence of resource lines
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terminated by newline characters or the end of the file.
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The syntax of an individual resource line is:
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.LP
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.\" Start marker code here
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.EX
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ResourceLine = Comment | IncludeFile | ResourceSpec | <empty line>
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Comment = "!" {<any character except null or newline>}
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IncludeFile = "#" WhiteSpace "include" WhiteSpace FileName WhiteSpace
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FileName = <valid filename for operating system>
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ResourceSpec = WhiteSpace ResourceName WhiteSpace ":" WhiteSpace Value
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ResourceName = [Binding] {Component Binding} ComponentName
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Binding = "\&." | "*"
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WhiteSpace = {<space> | <horizontal tab>}
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Component = "?" | ComponentName
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ComponentName = NameChar {NameChar}
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NameChar = "a"\-"z" | "A"\-"Z" | "0"\-"9" | "_" | "-"
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Value = {<any character except null or unescaped newline>}
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.EE
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.LP
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Elements separated by vertical bar (|) are alternatives.
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Curly braces ({\&.\&.\&.}) indicate zero or more repetitions
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of the enclosed elements.
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Square brackets ([\&.\&.\&.]) indicate that the enclosed element is optional.
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Quotes ("\&.\&.\&.") are used around literal characters.
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.LP
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IncludeFile lines are interpreted by replacing the line with the
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contents of the specified file.
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The word ``include'' must be in lowercase.
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The file name is interpreted relative to the directory of the file in
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which the line occurs (for example, if the file name contains no
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directory or contains a relative directory specification).
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.LP
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If a ResourceName contains a contiguous sequence of two or more Binding
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characters, the sequence will be replaced with single ``\&.'' character
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if the sequence contains only ``\&.'' characters;
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otherwise, the sequence will be replaced with a single ``*'' character.
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.LP
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A resource database never contains more than one entry for a given
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ResourceName. If a resource file contains multiple lines with the
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same ResourceName, the last line in the file is used.
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.LP
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Any white space characters before or after the name or colon in a ResourceSpec
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are ignored.
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To allow a Value to begin with white space,
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the two-character sequence ``\^\\\^\fIspace\fP'' (backslash followed by space)
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is recognized and replaced by a space character,
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and the two-character sequence ``\^\\\^\fItab\fP''
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(backslash followed by horizontal tab)
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is recognized and replaced by a horizontal tab character.
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To allow a Value to contain embedded newline characters,
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the two-character sequence ``\^\\\^n'' is recognized and replaced by a
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newline character.
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To allow a Value to be broken across multiple lines in a text file,
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the two-character sequence ``\^\\\^\fInewline\fP''
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(backslash followed by newline) is
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recognized and removed from the value.
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To allow a Value to contain arbitrary character codes,
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the four-character sequence ``\^\\\^\fInnn\fP'',
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where each \fIn\fP is a digit character in the range of ``0''\^\-``7'',
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is recognized and replaced with a single byte that contains
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the octal value specified by the sequence.
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Finally, the two-character sequence ``\^\\\\'' is recognized
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and replaced with a single backslash.
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.SH "SEE ALSO"
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XrmGetResource(__libmansuffix__),
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XrmInitialize(__libmansuffix__),
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XrmPutResource(__libmansuffix__)
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.br
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\fI\*(xL\fP
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