This dash can be placed between two | characters, for example |-|.
When || is typed, the default intra word dash is used, which is <context>||</context>. You can configure this with <cmd>setuphyphenmark</cmd >
The || is also used in word combinations like (intra)word, which is typed as (intra|)|word.
a |<|as explained below|>| conflirtaneous \
The main reason behind this mechanism is that TeX doesn’t really know how to hyphenate
\VL \ShowComposed intra|=|word \VL\LR
\VL \ShowComposed intra|'|word \VL\LR