In the declarative sentence, the subject usually comes before the verb and the verb organizes the relationship with the complements. The object or direct object appears after the verb in the neutral order, while adverbial complements are usually placed at the end or moved to highlight information. Punctuation helps delimit those units, mark syntactic pauses, and separate ideas when the sequence becomes longer, as in Sentence Structure.

The comma separates elements in an enumeration, isolates explanatory insertions, and delimits appositions and vocatives. It can also appear before a long subordinate clause or between linked elements when clarity requires it, and its use before 'and' depends on structure and the need to avoid ambiguity. In formal texts, the comma helps make the relationship between segments more precise than in quick or digital writing.

The period indicates syntactic closure and organizes the text into complete units of meaning. The period followed by 'and' (punto y seguido) separates sentences within the same paragraph, the period with a new paragraph (punto y aparte) opens a new paragraph, and the final period (punto final) closes the text. Its main function is to prioritize information and facilitate continuous reading.

Question marks enclose the complete question and require an opening and a closing mark in the general Spanish standard, as in Interrogative Sentences. The question may include interrogative words or an overall interrogative intonation, and in informal digital writing the opening mark is sometimes omitted. After the closing question mark, the following word keeps a capital letter if a new sentence begins.

Exclamation marks enclose an expression of admiration, surprise, command, or emotion, and they are also written with an opening and a closing mark in the general standard, as in Exclamatory Sentences. They can be combined with interrogation marks to show different expressive nuances. After the closing mark, the next phrase begins with a capital letter if it starts a new sentence.

Colons introduce an enumeration, a direct quote, or an explanation that develops what came before. They usually indicate that the following information depends semantically on the first part and they broaden, specify, or justify what was said. In formal register, they order the discourse very clearly and are common before examples and definitions.

The semicolon separates complex elements within an enumeration when each element already contains commas or other internal information. It also relates closely related sentences that keep a strong semantic connection, without reaching the full closure of a period. Using it requires a balance between the brief pause of the comma and the full pause of the period.

Quotation marks indicate quotes, short titles, or words used with a special value, and they can be written with regional typographic variants such as «» or 2222, depending on editorial standard and context. The dash introduces interventions in dialogue and can also isolate clarifications from the narrator, while the hyphen usually functions as an internal graphic connector in other words. In direct style, quotation marks and the dash help distinguish the quoted voice from the main voice, as in Direct Style.

Parentheses add additional, clarifying, or secondary information without breaking the main thread of the sentence. Brackets are used mainly for insertions within a quote or to add editorial clarifications in a text that has already been quoted. Both marks allow the essential information to be distinguished from the supplementary and help maintain discourse cohesion.

Ellipsis points indicate omission, interruption, hesitation, or an open enumeration. They can replace an omitted part of the text when the context allows it to be recovered, or leave a sentence hanging to create expectation or suggest continuity. They are written attached to the previous word and require careful adjustment with other punctuation marks.

After a closing mark, the following word starts with a capital letter if a new sentence is opened, as happens after the period, question marks, and exclamation marks. Opening marks are written attached to the following word and closing marks to the previous word, while spaces are reserved to separate lexical blocks and not to separate signs from the content they belong to. In careful writing, these rules support text legibility and help interpret the intent of each sequence.

Punctuation organizes syntax, distributes information, and guides the reader’s interpretation in both brief and long texts. The comma, the period, question marks and exclamation marks, colons, semicolons, quotation marks, the dash, parentheses, brackets, and ellipsis points fulfill different functions, but they all contribute to the clarity of written discourse. Correct use depends on sentence structure, the level of formality, and the logical relationship between the units of the text, in line with Formal Register.