282 lines
8.1 KiB
Plaintext
282 lines
8.1 KiB
Plaintext
.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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.ny0
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.TH XrmGetFileDatabase 3X11 "Release 5" "X Version 11" "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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XrmDatabase XrmGetFileDatabase\^(\^\fIfilename\fP\^)
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.br
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char *\fIfilename\fP\^;
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.LP
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void XrmPutFileDatabase\^(\^\fIdatabase\fP, \fIstored_db\fP\^)
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.br
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XrmDatabase \fIdatabase\fP\^;
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.br
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char *\fIstored_db\fP\^;
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.LP
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XrmDatabase XrmGetStringDatabase\^(\^\fIdata\fP\^)
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.br
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char *\fIdata\fP\^;
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.LP
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char *XrmLocaleOfDatabase\^(\^\fIdatabase\fP\^)
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.br
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XrmDatabase \fIdatabase\fP\^;
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.LP
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XrmDatabase XrmGetDatabase\^(\^\fIdisplay\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.LP
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void XrmSetDatabase\^(\^\fIdisplay\fP\^, \fIdatabase\fP\^)
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.br
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Display *\fIdisplay\fP\^;
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.br
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XrmDatabase \fIdatabase\fP\^;
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.LP
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void XrmDestroyDatabase\^(\^\fIdatabase\fP\^)
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.br
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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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.\" $Header: display.a,v 1.1 88/02/26 10:26:29 mento Exp $
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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 must contain a sequence of entries in valid ResourceLine
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format (see section 15.1).
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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 must contain a sequence of entries in valid ResourceLine
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format (see section 15.1).
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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 end of 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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.Ds 0
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.TA 1.5i 1.75i
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.ta 1.5i 1.75i
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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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.De
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.\" End marker code here
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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. The word "include" must be in lowercase.
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The filename is interpreted relative to the directory of the file in
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which the line occurs (for example, if the filename 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 whitespace character 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 whitespace,
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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(3X11),
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XrmInitialize(3X11),
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XrmPutResource(3X11)
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.br
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\fI\*(xL\fP
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