我正在努力寻找一种方法来在我的回忆录文档中设置一些全宽文本。这是我的序言的摘录：
\documentclass[10pt]{memoir} %document class
\setstocksize{240mm}{150mm}
\usepackage[T1]{fontenc} %font output
\usepackage[utf8]{inputenc} %font input
\usepackage[english]{babel}
\usepackage{lipsum}
\usepackage{marginfix}
\usepackage{graphicx}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% PAGE LAYOUT
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{geometry}
\let\footruleskip\undefined %headings
\usepackage{fancyhdr}
\nouppercaseheads
\settrimmedsize{240mm}{150mm}{*}
\setlength{\trimtop}{0pt}
\setlength{\trimedge}{\stockwidth}
\addtolength{\trimedge}{-\paperwidth}
\settypeblocksize{193mm}{84mm}{*}
\setulmargins{27mm}{*}{*}
\setlrmargins{18mm}{*}{*}
\setmarginnotes{3mm}{3.5cm}{\onelineskip}
\setheadfoot{\onelineskip}{\onelineskip}
\setlength{\headsep}{1.2cm}
%\setheaderspaces{*}{2\onelineskip}{*}
\checkandfixthelayout
\addtolength{\footskip}{0.55cm}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% FULLWIDTH
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage[outermargin=-3.5cm]{fullwidth}
\newenvironment{fullwidthblocked}{%
\blockmargin%
\begin{fullwidth}%
}{%
\end{fullwidth}%
\unblockmargin%
}
在环境中编写长段落fullwidthblocked不会带来任何问题：文本从应开始的位置开始，并在页面结束时正确中断。例如，此代码有效：
\begin{document}
\lipsum[99]
\begin{fullwidthblocked}
\lipsum
\end{fullwidthblocked}
\end{document}
但是，我无法找到正确放置其他环境的方法fullwidthblocked。我尝试使用两列的tcolorbox和multicols，但结果很糟糕。如果文本太长，则会tcolorbox在新页面开始，在页面中间中断并在新页面重新开始，而插入multicols会使代码无法编译。
如果需要的话，我可以给你提供一些更明确的例子。