<?xml version="1.0"?>
<!DOCTYPE varlistentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
                              "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % entities.ent SYSTEM "entities.ent">
%entities.ent;
]>
<varlistentry>
<term><option>--buf-size=<replaceable>n</replaceable></option></term>
<listitem><para>Set the
<indexterm>
<primary>--buf-size=n</primary>
</indexterm>
the maximum number of characters simultaneously present in current
lines of open files and in control sequences between <markup
role="tex">\csname</markup> and <markup
role="tex">\endcsname</markup>.  &TeX; uses the buffer to contain
input lines, but macro expansion works by writing material into the
buffer and reparsing the line.  As a consequence, certain constructs
require the buffer to be very large, even though most documents can be
handled with a small value.</para></listitem>
</varlistentry>
