由于flashcardsdocumentclass 允许使用选项grid使抽认卡网格全局可见，即在正面和背面，我想知道是否可以每隔一页暂停/暂停该选项。
换句话说，出于在 A4 纸上打印抽认卡并裁剪卡片的实际原因，有没有办法只在抽认卡的正面打印网格？这样可以避免任何未对齐的黑色笔画，因为正面和背面的网格永远不会完美地叠加在纸上。
请查看下面的 MWE（选项grid已打开在)：
\documentclass[MyFlashCardsConfig, grid]{flashcards}
\cardfrontstyle[\small\slshape]{headings}
\cardbackstyle[\small]{empty}
% v. https://tex.stackexchange.com/questions/115141/how-can-i-aboxed-a-matrix
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{geometry}
\geometry{
a4paper,
total={210mm,297mm}, %instead of {210mm, 297mm}
left=0mm,
top=0mm,
}
%
%
\setlength{\cardheight}{74.25mm} % 297/4 = 74.25
\setlength{\cardwidth}{105mm} % {a4-width} / 2 = 105 mm
\setlength{\topskip}{0mm}
\setlength{\cardmargin}{15 pt}
%
\cardfrontheadstyle[\bfseries\scshape]{left}
\cardfrontfootstyle[\small\itshape\em\bfseries]{right}
\usepackage[colorlinks=true,linkcolor=blue,citecolor=blue]{hyperref}
\usepackage{bibentry}
\usepackage{amsfonts}
\usepackage{mathtools} % for commands such as '\coloneqq'
\usepackage{xcolor}
\usepackage{bold-extra}
\definecolor{my-lightblue}{HTML}{00aedb}
\begin{document}
\cardfrontfoot{GRT}
%=========================================================%
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
%=========================================================%
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
%=========================================================%
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
%=========================================================%
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
%=========================================================%
\end{document}
为了兼容 A4 打印纸，我还创建了一个定制的我的FlashCards配置.cfg文件，
\ProvidesFile{avery5388.cfg}
\newcommand{\cardpaper}{a4paper}
\newcommand{\cardpapermode}{portrait}
\newcommand{\cardrows}{4}
\newcommand{\cardcolumns}{2}
\setlength{\cardheight}{70mm}
\setlength{\cardwidth}{100mm}
\setlength{\topoffset}{0mm}
\setlength{\oddoffset}{0mm}
\setlength{\evenoffset}{0mm}
\endinput
这是通过 documentclass 的选项加载的flashcards。
答案1
只是为了好玩，我从头开始创建了一个新版本，用来\fbox创建网格。如果填充几何提供的文本区域。
宏\defaulthead和\defaultfoot每个都有一个参数，它们作为可选参数传递flashcard。我们的想法是将所有内容放入这些宏中，这些内容不会改变（除了可能的\thecard），并传递任何会改变的内容。您甚至可以使用\parbox或tabular^代替\makebox。
\documentclass{article}
\usepackage[a4paper, margin=5mm, noheadfoot]{geometry}
\pagestyle{empty}
\newcommand{\FCXrows}{4}
\newcommand{\FCXcols}{2}
\setlength{\fboxsep}{15pt}% card margin
% start of sty
\RequirePackage{xparse}
\newcounter{card}
\newcommand{\defaulthead}[1]{\makebox[\cardwidth][l]{#1}}
\newcommand{\defaultfoot}[1]{\makebox[\cardwidth][r]{\thecard}}
\newcommand{\cardfrontstyle}{\normalfont\normalsize\centering}
\newcommand{\cardbackstyle}{\normalfont\normalsize\raggedright}
\newlength{\cardwidth}
\newlength{\cardheight}
\AtBeginDocument{% wait until text area set
\setlength{\cardwidth}{\dimexpr \textwidth/\FCXcols-2\fboxsep-2\fboxrule}%
\setlength{\cardheight}{\dimexpr \textheight/\FCXrows-2\fboxsep-2\fboxrule}}
\newcounter{FCXrow}
\renewcommand{\theFCXrow}{\alph{FCXrow}}
\newcounter{FCXcol}[FCXrow]
\renewcommand{\theFCXcol}{\alph{FCXcol}}
\loop\ifnum\value{FCXrow}<\FCXrows\relax% create saveboxes
\stepcounter{FCXrow}{% only one loop per group
\loop\ifnum\value{FCXcol}<\FCXcols\relax
\stepcounter{FCXcol}%
\expandafter\let\expandafter\front\csname front\theFCXrow\theFCXcol\endcsname
\newsavebox{\front}%
\global\expandafter\let\csname front\theFCXrow\theFCXcol\endcsname=\front
\expandafter\let\expandafter\back\csname back\theFCXrow\theFCXcol\endcsname
\newsavebox{\back}%
\global\expandafter\let\csname back\theFCXrow\theFCXcol\endcsname=\back
\repeat}%
\repeat
\setcounter{FCXrow}{0}
\newcommand{\FCXprintcards}{\setcounter{FCXrow}{0}% print front
\lineskip=0pt
\parskip=0pt
\parindent=0pt
\par
\loop\ifnum\value{FCXrow}<\FCXrows\relax
\stepcounter{FCXrow}{% only one loop per group
\loop\ifnum\value{FCXcol}<\FCXcols\relax
\stepcounter{FCXcol}%
\expandafter\let\expandafter\front\csname front\theFCXrow\theFCXcol\endcsname
\ifvoid\front
\fbox{\parbox[c][\cardheight][c]{\cardwidth}{\hfill}}%
\else
\fbox{\box\front}%
\fi
\repeat}%
\allowbreak
\repeat
\setcounter{FCXrow}{0}% print back
\loop\ifnum\value{FCXrow}<\FCXrows\relax
\stepcounter{FCXrow}{% only one loop per group
\advance\fboxsep by \fboxrule% empty border
\fboxrule=0pt
\count1=0
\loop\ifnum\count1<\FCXcols\relax
\setcounter{FCXcol}{\numexpr \FCXcols-\count1}% in reverse order
\advance\count1 by 1
\expandafter\let\expandafter\back\csname back\theFCXrow\theFCXcol\endcsname
\ifvoid\back
\fbox{\parbox[c][\cardheight][c]{\cardwidth}{\hfill}}%
\else
\fbox{\box\back}%
\fi
\repeat}%
\ifnum\value{FCXrow}<\FCXrows \allowbreak\fi% no extra page
\repeat
\setcounter{FCXrow}{0}%
\ignorespaces}% end of \FCXprintcards
\AtEndDocument{\FCXprintcards}
\NewDocumentEnvironment{flashcard}{O{}mO{}}{% #1=head, #2=front, #3=foot
\stepcounter{card}% not used internally
\ifnum\value{FCXrow}=\FCXrows\relax
\ifnum\value{FCXcol}=\FCXcols\relax
\FCXprintcards
\fi
\fi
\ifnum\value{FCXrow}=0\relax
\stepcounter{FCXrow}%
\fi
\ifnum\value{FCXcol}=\FCXcols\relax
\stepcounter{FCXrow}%
\fi
\stepcounter{FCXcol}%
\expandafter\let\expandafter\front\csname front\theFCXrow\theFCXcol\endcsname
\global\setbox\front=\hbox{\begin{minipage}[c][\cardheight][s]{\cardwidth}
{\defaulthead{#1}\par}\vfill
{\cardfrontstyle #2\par}\vfill
{\defaultfoot{#3}\par}%
\end{minipage}}%
\expandafter\let\expandafter\back\csname back\theFCXrow\theFCXcol\endcsname
\begin{lrbox}{\back}\begin{minipage}[c][\cardheight][c]{\cardwidth}%
\cardbackstyle}% contents here
{\end{minipage}\end{lrbox}%
\global\setbox\back=\copy\back
\ignorespaces}
% end of sty
\renewcommand{\cardfrontstyle}{\small\slshape\centering}
\renewcommand{\cardbackstyle}{\small}
\renewcommand{\defaulthead}[1]{\makebox[\cardwidth][l]{\bfseries\scshape #1}}
\renewcommand{\defaultfoot}[1]{\makebox[\cardwidth][r]{\small\itshape\em\bfseries GRT}}
\usepackage[colorlinks=true,linkcolor=blue,citecolor=blue]{hyperref}% WTF?
\usepackage{bibentry}
\usepackage{amsfonts}
\usepackage{mathtools} % for commands such as '\coloneqq'
\usepackage{xcolor}
\usepackage{bold-extra}
\usepackage{blindtext}
\definecolor{my-lightblue}{HTML}{00aedb}
\begin{document}
%=========================================================%
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
%=========================================================%
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
%=========================================================%
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
%=========================================================%
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
\begin{flashcard}[{\color{my-lightblue} Definition} {\normalfont - \textbf{25.1.} Concepts of GRT}]{Front Page}
Explanations ...
\vspace*{\stretch{1}}
\end{flashcard}
\end{document}