Capital letters and punctuation: common text mistakes
Avoid common capitalisation and punctuation mistakes by separating sentence rules, proper names, language conventions and intentional tone.
Capitalisation and punctuation are often corrected by habit, but their rules depend on language and context. A proper name is not the same case as the first word after a full stop.
Treat mechanical sentence rules separately from contextual decisions.
Table of contents
Separate sentence starts from proper names
Automatic capitalisation can handle many sentence starts, but it does not know every name, brand or specialist term. Check names, numbers and technical strings separately. If the content contains names, numbers or technical strings, check those separately before keeping the resulting version.
Do not import another language’s rules
Days, months, titles and common nouns can be capitalised differently across languages. Multilingual text needs language-specific review. Check names, numbers and technical strings separately. If the content contains names, numbers or technical strings, check those separately before keeping the resulting version.
Use punctuation to clarify the sentence
Punctuation shapes how clauses relate and should follow the intended sentence structure rather than being treated as decoration. Check names, numbers and technical strings separately. If the content contains names, numbers or technical strings, check those separately before keeping the resulting version.
Use emphatic punctuation deliberately
Repeated exclamation marks or all caps are tone choices that may be inappropriate in a professional context even when not grammatically forbidden. Check names, numbers and technical strings separately. If the content contains names, numbers or technical strings, check those separately before keeping the resulting version.
Review automatic capitalisation
Abbreviations, fragments, lists and technical text can be altered incorrectly by a rule that assumes normal prose. Check names, numbers and technical strings separately. If the content contains names, numbers or technical strings, check those separately before keeping the resulting version.
Need a quick solution?
Try the toolRelated tools
Frequently asked questions
Related articles
Why does my text still contain mistakes after proofreading?
Understand why familiar text can hide obvious mistakes, and use distance, focused proofreading and a second check to catch more of them.
How can I correct spelling mistakes without complex software?
Correct spelling without installing a large application: keep the original, review suggestions carefully and check the final text before sending it.
Common grammar mistakes in professional writing
Spot recurring grammar problems in professional writing and use a structured review for agreement, homophones, sentence clarity and punctuation.