Hello,
The Letter module seems to also include a module for memos.
The following MWE fails with version 2021.10.10 23:43:
\usemodule[memo]
\setupmemo[
opening={People of Earth},
closing={Thanks for all the Fish,},
signature={The Dolphins}]
\startmemo
\startletter
We are writing to let you know that we are all leaving
\stopmemo
\stoptext
The following error is thrown by ConTeXt:
tex error > tex error on line 197 in file
/home/jason/.local/context/tex/texmf-modules/tex/context/third/letter/base/s-cor-02.mkvi:
Undefined control sequence \???memosectionrenderings
<argument>
\???memosectionrenderings
\v!head :\v!memo
<macro> \syst_setups_start_tex_two
#1#2#+\stopsetups ->\endgroup \dodoglobal \instance \defcsname
\??setup #1:#2
\endcsname #1{#3}
\stopsetups
187 \stopsetups
188
189 \startsetups[\???memosectionrenderings\v!head:\v!memo]
190 \def\\{\correspondencesectionparameter\c!separator}
191 \startpacked
192
\doifsomething{\correspondenceparameter\c!fromname}{\memotext\c!fromname
\correspondenceparameter\c!fromname \par}
193 \doifsomething{\correspondenceparameter\c!date
}{\memotext\c!date \correspondenceparameter\c!date \par}
194 \doifsomething{\correspondenceparameter\c!toname
}{\memotext\c!toname \correspondenceparameter\c!toname \par}
195 \doifsomething{\correspondenceparameter\c!subject
}{\memotext\c!subject \correspondenceparameter\c!subject \par}
196 \stoppacked
197 >> \stopsetups
198
199 \unexpanded\def\correspondence_memo_head_table#element%
200 {\doifsomething{\correspondenceparameter#element}
201 {\NC % label
202 \def\currentcorrespondencestyle{\v!memo:#element}%
203
\usecorrespondencestylestyleandcolor\c!titlestyle\c!titlecolor
204 \memotext#element
205 \EQ % text
206 \def\currentcorrespondencestyle{\v!memo:#element}%
207 \usecorrespondencestylestyleandcolor\c!textstyle\c!textcolor
The control sequence at the end of the top line of your error message
was never
\def'ed. You can just continue as I'll forget about whatever was undefined.
mtx-context | fatal error: return code: 256
