我有一個文檔，將在每章前面顯示摘要。摘要將列出所有段落中稍後出現的要點。
例如：
This chapter will talk about:
\printtopics
Section 1
Building a bridge is very easy. First start with some stones. Then,
\definetopic{How to build a temporary bridge from stones.}
find a narrow area in a river. Throw the stones into the river
until the river has completely stopped.
...
這會產生：
This chapter will talk about:
1. How to build a temporary bridge from stones.
2. How to hunt for rabbits.
3. How to find firewood.
Section 1
Building a bridge is very easy. First start with some stones. Then,
find a narrow area in a river. Throw the stones into the river
until the river has completely stopped.
...
使用\definetopic{How to build a temporary bridge from stones.}意味著這些單字被添加到列表中，並出現在章節開頭的摘要中。
如何定義要新增到清單中的項目（出現在章節開頭），但在 ConTeXt 中的文件文字中定義它們？
答案1
您可以為此目的定義一個章節本地列表。
\definelist
[topics]
[criterium=chapter,
headnumber=always,
pagenumber=no]
\definecounter
[topic]
[way=bychapter]
\define[1]\definetopic{%
\incrementcounter[topic]%
\writetolist[topics]{\rawcountervalue[topic]}{#1}}
\starttext
\startchapter[title=Foo]
This chapter will talk about:
\placelist[topics]
\startsection[title=Bar]
\definetopic{How to build a temporary bridge from stones.}%
\input knuth
\definetopic{How to hunt for rabbits.}%
\input knuth
\definetopic{How to find firewood.}%
\input knuth
\stopsection
\stopchapter
\startchapter[title=Foo]
This chapter will talk about:
\placelist[topics]
\startsection[title=Bar]
\definetopic{How to hunt for rabbits.}%
\input knuth
\stopsection
\stopchapter
\stoptext
