syn match NITAttribute "\<_\h\w*"
" Literal strings
-syn region NITString matchgroup=NITStringDelimit start="\"" end="\"" skip="\\\\\|\\\"" contains=NITExprSubst,NITExprSubstError
-syn region NITString matchgroup=NITStringDelimit start="\"\"\"" end="\"*\zs\"\"\"" skip="\\\\\|\\\"" contains=NITExprSubstLong
+syn region NITString matchgroup=NITStringDelimit start="\"" end="\"" skip="\\\\\|\\\"" contains=NITExprSubst,NITExprSubstError,@Spell
+syn region NITString matchgroup=NITStringDelimit start="\"\"\"" end="\"*\zs\"\"\"" skip="\\\\\|\\\"" contains=NITExprSubstLong,@Spell
syn region NITString matchgroup=NITStringDelimit start="'" end="'" skip="\\\\\|\\'"
" Labels
" Comments and Documentation
syn match NITSharpBang "\%^#!.*"
-syn match NITComment "#.*" contains=NITTodo
+syn match NITComment "#.*" contains=NITTodo,@Spell
" Keywords
syn keyword NITKeyword abstract intern new