http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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/* $Id: AFPConstants.java 1339442 2012-05-17 01:42:56Z gadams $ */

package org.apache.fop.afp;


Constants used by the AFP renderer.

/**
 * Constants used by the AFP renderer.
 *
 */
public interface AFPConstants {

    
The encoding to use to convert to EBCIDIC

/**
     * The encoding to use to convert to EBCIDIC
     */
    String EBCIDIC_ENCODING = "Cp1146";

    
The encoding to use to convert to ASCII

/**
     * The encoding to use to convert to ASCII
     */
    String ASCII_ENCODING = "Cp1252";

    
The encoding to use to convert to US ASCII (7 bit)

/**
     * The encoding to use to convert to US ASCII (7 bit)
     */
    String US_ASCII_ENCODING = "US-ASCII";

    
The scaling of the default transform is set to
approximately 72 user space coordinates per square inch

/**
     * The scaling of the default transform is set to
     * approximately 72 user space coordinates per square inch
     */
    int DPI_72 = 72;

    
72dpi in millipoints

/**
     * 72dpi in millipoints
     */
    int DPI_72_MPTS = DPI_72 * 1000;

    
The line width is set as a multiplier of a default line with; the width of the default
line width is implementation defined, which probably means different devices use different
actual widths; this means that the source line width (as specified in, say, a SVG line
element) needs to be corrected by a fudge factor that depends on the output device so that
the final output (print to paper, screen viewer) looks as intended.

/**
     * The line width is set as a multiplier of a default line with; the width of the default
     * line width is implementation defined, which probably means different devices use different
     * actual widths; this means that the source line width (as specified in, say, a SVG line
     * element) needs to be corrected by a fudge factor that depends on the output device so that
     * the final output (print to paper, screen viewer) looks as intended.
     */
    float LINE_WIDTH_CORRECTION = 2.5f;

}