Environments

In a similar way as content-based tags, environments are used to mark portions of text with a special meaning. However, while content-based tags usually enclose small portions of text, environments often enclose portions that are several paragraphs long. Frequently used environments in mathematics are theorem and proof, like in the example below:

Theorem 1. There exist no positive integers a, b, c and n with n⩾3, such that aⁿ + bⁿ = cⁿ.

You may enter environments using Text→Environment. Other environments with a similar rendering as theorems are proposition, lemma, corollary, axiom, definition. You may use the dueto macro (entered using \ d u e t o return) in order to specify the person(s) to which the theorem is due, like in

Theorem 2. (Pythagoras) Under nice circumstances, we have a² + b² = c².

Other frequently used environments with a similar rendering as theorems, but which do not emphasize the enclosed text, are remark, note, example, warning, exercise and problem. The remaining environments verbatim, code, quote, quotation and verse can be used in order to enter multiparagraph text or code, quotations or poetry.