这个 LaTeX 文档应该有一页（或两页，我现在使用的是\lipsum）A4 纵向页面，后面跟着一页 A4 横向页面。但是，在包含内容的页面之前有一个空白的横向页面，我不知道它是从哪里来的。这是怎么回事？
\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{libertine}
\usepackage[a4paper, bottom=1cm]{geometry}
\usepackage{pdflscape}
\usepackage{lipsum}
\pagenumbering{gobble}
\begin{document}
\title{Test Document with Wide Table}
\date{1st December 2020}
\author{TRiG}
\maketitle
\section*{This is a document}
\lipsum
\newgeometry{,hmargin=3cm,vmargin=5cm,landscape}
\begin{landscape}
\subsection*{Column Details}
\noindent\begin{tabular}{| l | l l p{14cm} |}
\hline
A & Stock Code & Mandatory & Some text here \\
\hline
B & Supplier Code & Optional & This is long text. \\
\hline
C & Manufacturer Code & Optional & \\
\hline
D & Alternative Code & Optional & This is even longer text. \\
\hline
E & EAN Code & Optional & This is further text. \\
\hline
F & Product Name & Mandatory & \\
\hline
G & Brand Name & Mandatory & \\
\hline
H & Summary & Optional & This should be yet more text. \\
\hline
I & Spotlight & Optional & \\
\hline
J & Price & Mandatory & \\
\hline
K & Recommended Retail Price & Optional & \\
\hline
L & Cost Price & Optional & \\
\hline
M & VAT Rate & Mandatory & \\
\hline
N & Description & Optional & \\
\hline
O & Specifications & Optional & \\
\hline
P & Display & Mandatory & Permitted values: Visible, Hidden, Blocked \\
\hline
Q & Available for Purchase & Mandatory & Permitted values: Yes, No \\
\hline
R & Link & Optional & This should be a full URL to a location with more product information (e.g., a YouTube video). \\
\hline
S--AB & Categories 1 to 10 & Optional & Category 1 is mandatory. \\
\hline
AC--AL & Images 1 to 10 & Optional & These are the names of associated image files, in order. \\
\hline
AM--AV & Files 1 to 10 & Optional & These are the names of associated PDF documents, in order. \\
\hline
AW & Stock Amount & Mandatory & The permitted values are any number (including zero, for ``out of stock''), or the letter ``U'' for ``stock not tracked (uncounted)''. \\
\hline
AX & Product Weight & Optional & \\
\hline
AY & Source Supplier & Optional & \\
\hline
AZ & Product Unique & Optional & Required if there's a Variant Name in the following column. \\
\hline
BA & Variant Name & Optional & \\
\hline
\end{tabular}
\end{landscape}
\end{document}
如果能减少表格上的缩进就更好了，但那只是小事。
答案1
您的表格太大，无法放在一页上，因此它会被推到下一页。
除了考虑@ulrike Fisher的评论之外，您还可以进行newgeometry相应的设置：
\documentclass[12pt]{article}
\usepackage{libertine}
\usepackage[a4paper]{geometry}
\usepackage{pdflscape}
\usepackage{lipsum}
\pagenumbering{gobble}
\begin{document}
\title{Test Document with Wide Table}
\date{1st December 2020}
\author{TRiG}
\maketitle
\section*{This is a document}
\lipsum*
\newgeometry{hmargin=2cm,vmargin=1cm} % increase area of text
\begin{landscape}
\subsection*{Column Details}
\vfil\centering%
\begin{tabular}{| l | l l p{14cm} |}
\hline
A & Stock Code & Mandatory & Some text here \\
\hline
B & Supplier Code & Optional & This is long text. \\
\hline
C & Manufacturer Code & Optional & \\
\hline
D & Alternative Code & Optional & This is even longer text. \\
\hline
E & EAN Code & Optional & This is further text. \\
\hline
F & Product Name & Mandatory & \\
\hline
G & Brand Name & Mandatory & \\
\hline
H & Summary & Optional & This should be yet more text. \\
\hline
I & Spotlight & Optional & \\
\hline
J & Price & Mandatory & \\
\hline
K & Recommended Retail Price & Optional & \\
\hline
L & Cost Price & Optional & \\
\hline
M & VAT Rate & Mandatory & \\
\hline
N & Description & Optional & \\
\hline
O & Specifications & Optional & \\
\hline
P & Display & Mandatory & Permitted values: Visible, Hidden, Blocked \\
\hline
Q & Available for Purchase & Mandatory & Permitted values: Yes, No \\
\hline
R & Link & Optional & This should be a full URL to a location with more product information (e.g., a YouTube video). \\
\hline
S--AB & Categories 1 to 10 & Optional & Category 1 is mandatory. \\
\hline
AC--AL & Images 1 to 10 & Optional & These are the names of associated image files, in order. \\
\hline
AM--AV & Files 1 to 10 & Optional & These are the names of associated PDF documents, in order. \\
\hline
AW & Stock Amount & Mandatory & The permitted values are any number (including zero, for ``out of stock''), or the letter ``U'' for ``stock not tracked (uncounted)''. \\
\hline
AX & Product Weight & Optional & \\
\hline
AY & Source Supplier & Optional & \\
\hline
AZ & Product Unique & Optional & Required if there's a Variant Name in the following column. \\
\hline
BA & Variant Name & Optional & \\
\hline
\end{tabular}
\end{landscape}
\restoregeometry % return to original page llayout
\end{document}
