Since Version 2.5 WordPress supports so called Shortcodes. They have been introduced for creating macros to be used in a post's content. For examples of shortcodes and how to use them, see WordPress.com Shortcodes, though some shortcodes featured there are exclusive to WordPress.com.
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Ne noster adolescens mnesarchum mei, an vim prima postea definiebas, mei in apeirian consequat disputando. Te vis amet abhorreant, in vel sonet exerci volutpat. Et duo homero commune. Tractatos deterruisset mei in, in quo modo congue.
Ne noster adolescens mnesarchum mei, an vim prima postea definiebas, mei in apeirian consequat disputando.