Modifiers matching signifier:

• grammatical,
• syntactical,
• relevant,
• defined,
• written,
• external,

Simple categories matching written:

• publication,
• rule,
• document,
• material,
• signifier,
• work,
• clue,
• marker,
• tradition,
• sign,
• execution,
• ad,
• language,
• information,
• source,
• composition,
• style,
• marking,
• agreement,
• guidance,
• specification,
• manual,
• artifact,
• matter,
• order,
• works,
• record,
• word,
• section,
• lesson,
• representation,
• communication,
• tool,
• instrument,
• block,
• codification,
• symbol,
• summary,
• report,
• structure,
• account,
• text,
• distribution,
• research,
• response,
• contract,
• passage,
• scripture,
• song,
• database,
• commitment,
• proposal,
• submission,
• piece,
• procedure,
• activity,
• item,
• essay,
• discovery,
• plan,
• recitation,
• papers,
• obligation,
• medium,
• history,
• means,
• constitution,
• institution,
• code,
• punctuation,
• book,
• program,
• literature,
• thing,
• explanation,
• instruction,
• authorization,
• resource,
• comment,
• instructions,
• evidence,
• content,
• test,
• product,
• prayer,
• guideline,
• presentation,
• disclosure,
• reminder,
• form,
• guide,
• correspondence,
• copy,
• artefact,
• action,
• ceremony,
• statement,
• output,
• file,
• expression,
• request,
• assignment,
• message,
• genre,
• sentence,
• coursework,
• production,
• question,
• documentation,
• notice,
• communications,
• task,
• format,
• commentary,
• discourse,
• error,
• data,
• measure,
• law,