[dev-context] strc-itm.mklx: Interface check

Hi, the check for the current interface on line 1596 doesn't work because it uses the undefined \v!english variable which should be \s!english. To ensure commands like \sym work after the fix a few synonyms have to be added to \itemgroupcommands. Line 1579 ff: \appendtoks     \let\item

[dev-context] strc-itm.mklx: \startspecialitemgroupitem

Hi, the \startspecialitemgroupitem command lacks a entry for \txt. A new entry on line 1324 is needed: \letvalue{\??itemgroupstart\v!item}\strc_itemgroups_start_do_item \letvalue{\??itemgroupstart\v!sub }\strc_itemgroups_start_subitem \letvalue{\??itemgroupstart\v!sym