/usr/include/paper.h is in libpaper-dev 1.1.24+nmu2ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) Yves Arrouye <Yves.Arrouye@marin.fdn.fr>, 1996.
*
* Use under the GPL version 2. You are not allowed to remove this
* copyright notice.
*
*/
#ifndef PAPER_H
#define PAPER_H
/*
* systempapername() returns the preferred paper size got from either the
* PAPER environment variable or the /etc/papersize file. If 0 is
* returned, one should use the value of defaultpapername().
*
* paperinfo() looks from the given paper name in a table of known sizes
* and returns 0 if it found it; if this is the case, the width and
* height arguments have been set to the correct values in points (one
* inch contains 72 points). The case of paper size is not significant.
*
*/
#if !defined(__STDC__)
#define __PAPER_CONST
#define __PAPER_PROTO(p) ()
#else
#define __PAPER_CONST const
#define __PAPER_PROTO(p) p
#endif
#ifdef __cplusplus
extern "C" {
#endif
struct paper;
extern int paperinit __PAPER_PROTO((void));
extern int paperdone __PAPER_PROTO((void));
extern __PAPER_CONST char* papername __PAPER_PROTO((const struct paper*));
extern double paperpswidth __PAPER_PROTO((const struct paper*));
extern double paperpsheight __PAPER_PROTO((const struct paper*));
extern __PAPER_CONST char* defaultpapersizefile __PAPER_PROTO((void));
extern __PAPER_CONST char* systempapersizefile __PAPER_PROTO((void));
extern __PAPER_CONST char* defaultpapername __PAPER_PROTO((void));
extern char* systempapername __PAPER_PROTO((void));
extern __PAPER_CONST struct paper* paperinfo __PAPER_PROTO((const char*));
extern __PAPER_CONST struct paper* paperwithsize __PAPER_PROTO((
double pswidth, double psheight));
extern __PAPER_CONST struct paper* paperfirst __PAPER_PROTO((void));
extern __PAPER_CONST struct paper* paperlast __PAPER_PROTO((void));
extern __PAPER_CONST struct paper* papernext __PAPER_PROTO((
const struct paper*));
extern __PAPER_CONST struct paper* paperprev __PAPER_PROTO((
const struct paper*));
#undef __PAPER_CONST
#undef __PAPER_PROTO
#ifdef __cplusplus
}
#endif
#endif
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