Players can organize themselves into corporations (similar to guilds or clans in other MMOs). Corporations are run by one chief executive officer (CEO) who controls the corporation's assets. The CEO assigns roles to corporation members such as director, accountant and personnel manager. Corporations may also band together to form alliances. Corporations and alliances come in different shapes and sizes. Some player groups write press releases about new business openings and send out IPO information to potential in-game venture capital investors. Alliances can control enough star systems that their territory can be plotted on the "Eve Online" game map. Alliances based in lawless space often form unofficial political power blocs with other alliances. These power blocs are typically referred to as "coalitions". Unlike formally established alliances, coalitions are similar in nature to Japanese "keiretsu" an informal 'business arrangement' in which several corporations band together to provide mutual financial, military and/or industrial support.