Document that linearize disables qdf (fixes #312)

Jay Berkenbilt
1 parent a5a016cd
Showing 2 changed files with 7 additions and 3 deletions
manual/qpdf-manual.xml
qpdf/qpdf.cc
@@ -1826,7 +1826,8 @@ outfile.pdf&lt;/option&gt;
       <listitem>
        <para>
         Turns on QDF mode.  For additional information on QDF, please
-        see <xref linkend="ref.qdf"/>.
+        see <xref linkend="ref.qdf"/>. Note that
+        <option>--linearize</option> disables QDF mode.
        </para>
       </listitem>
      </varlistentry>
@@ -2364,7 +2365,9 @@ outfile.pdf&lt;/option&gt;
    some restrictions, in an ordinary text editor.  This can be very
    useful for experimenting with different PDF constructs or for
    making one-off edits to PDF files (though there are other reasons
-   why this may not always work).
+   why this may not always work). Note that QDF mode does not support
+   linearized files. If you enable linearization, QDF mode is
+   automatically disabled.
   </para>
   <para>
    It is ordinarily very difficult to edit PDF files in a text editor
@@ -1378,7 +1378,8 @@ ArgParser::argHelp()
         << "                    including DCT (JPEG)\n"
         << "\n"
         << "In qdf mode, by default, content normalization is turned on, and the\n"
-        << "stream data mode is set to uncompress.\n"
+        << "stream data mode is set to uncompress. QDF mode does not support\n"
+        << "linearized files. The --linearize flag disables qdf mode.\n"
         << "\n"
         << "Setting the minimum PDF version of the output file may raise the version\n"
         << "but will never lower it.  Forcing the PDF version of the output file may\n"