正如您在下面的代码中看到的，我试图在重新定义的头部前放置一些空白，但如网格所示，没有显示任何空白。
\setuppapersize[A5]
\setupindenting[always,small,first]
% Chapters
\define[2]\CustomChapter{\dontleavehmode\framed[frame=off,width=broad,align=center]{#1.\\#2}}
\setuphead [chapter] [after=\blank[2*line]},before{\blank[line]},command=\CustomChapter]
% Author's note and closing should have a blank line before title and two after
\setuphead [title] [after={\blank[2*line]},before{\blank[2*line]},command=,align=middle,incrementnumber=list]
\showgrid
\starttext
% Author note
\starttitle[title={AUTHOR'S NOTE}]This is a note from the author.\stoptitle
% Chapters with Prologue and Epilogue
\starttitle[title={Prologue}]This is the Prologue.\stoptitle
\startchapter[title={One}]This is Chapter One.\stopchapter
\startchapter[title={Two}]This is Chapter Two\stopchapter
\starttitle[title={Epilogue}]This is the epilogue\stoptitle
% Closing Comments
\starttitle[title={CLOSING COMMENTS}]These are closing comments.\stoptitle
% Table of contents
\setupheadtext[content=CONTENTS]
\completecontent[criterium=previous]
\stoptext
答案1
您的代码中有拼写错误。正确的语法是before={\blank[...]}（您的代码中=缺少）。
但更重要的是，TeX 会忽略页面顶部的内容\vskip（这是\blank内部内容）。要获取页面顶部的空白，请使用\blank[force,line]etc.（即添加关键字force）。这是一个最简单的示例：
\setuppapersize[A5]
\setupindenting[always,small,first]
\setuphead
[chapter]
[
after={\blank[2*line]},
before={\blank[force,line]},
]
\setuphead
[title]
[
after={\blank[2*line]},
before={\blank[force,2*line]},
]
\showgrid
\starttext
% Author note
\starttitle[title={AUTHOR'S NOTE}]This is a note from the author.\stoptitle
% Chapters with Prologue and Epilogue
\starttitle[title={Prologue}]This is the Prologue.\stoptitle
\startchapter[title={One}]This is Chapter One.\stopchapter
\startchapter[title={Two}]This is Chapter Two\stopchapter
\starttitle[title={Epilogue}]This is the epilogue\stoptitle
% Closing Comments
\starttitle[title={CLOSING COMMENTS}]These are closing comments.\stoptitle
% Table of contents
\setupheadtext[content=CONTENTS]
\completecontent[criterium=previous]
\stoptext