Single-window system Single-window system The single-window system is a trade facilitation idea. As such, the implementation of a single window system enables international (cross-border) traders to submit regulatory documents at a single location and/or single entity. Such documents are typically customs declarations, applications for import/export permits, and other supporting documents such as certificates of origin and trading invoices. The main value proposition for having a single window for a country or economy is to increase the efficiency through time and cost savings for traders in their dealings with government authorities for obtaining the relevant clearance and permit(s) for moving cargoes across national
History and use of the single transferable vote and Tideman (see: Counting Single Transferable Votes for further details). "Proportional Representation by means of the Single Transferable Vote" (commonly called "Proportional Representation" rather than "Single Transferable Vote") is used for all public elections in the Republic of Ireland, except that single-winner elections (presidential elections and single-vacancy by-elections) reduce to instant-runoff voting. The most important elections in the Republic are those to Dáil Éireann, the lower house of the Oireachtas (parliament). The Dáil is directly elected from constituencies of between three and five seats. The Irish constitution specifies a minimum size of three seats and, although there is no maximum