add-highlighter global/rs regions
add-highlighter global/rs/r1 region \{ \} ref sub

add-highlighter shared/sub regions
add-highlighter shared/sub/r2 region  < > group
add-highlighter shared/sub/r2/ regex X 0:red

declare-option range-specs replaced_part 1 1.2,1.4|Placeholder
add-highlighter global/ replace-ranges replaced_part