Technical Reference/terms
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This is a glossary of software technical reference terms commonly found in descriptions of how OpenSimulator works from invocation, initialization, main loop and various services.
Definitions of OpenSimulator technical terms
- Caps
- An abbreviation that is short for Capabilities. Caps refers to the capabilities that a particular grid region provides to viewers such as voice or multimedia. For more, see CAPS.
- Client
- A program that connects to OpenSimulator over a network. A Viewer is a type of client that allows a user to view the simulation. Other types of clients might include search engines, messaging applications, or other programs that connect to OpenSimulator but do not create a visual presence within the simulation.
- Grid
- An array of one or more regions maintained by a collection of OpenSimulator ROBUST grid services that form a single, self-contained Virtual World.
- Hypergrid
- Sometimes abbreviated HG. Refers to both the communications protocol that integrates multiple grids and the collection of grids using the protocol. In theory the Hypergrid protocol allows users to teleport from a region in one grid to a region in another grid. For an overview of the concept, see Hypergrid. For details on specific versions of the Hypergrid protocol, see Hypergrid 1.0, Hypergrid 1.5, and Hypergrid 2.0.
- LLSD
- Acronym for Linden Lab Structured Data. A standard for encoding data for use with LLUDP communications between the simulator and the viewer. For details on standard, see Lab Structure Data.
- LLUDP
- Acronym for Linden Lab UDP. The designation is commonly used in the OpenSimulator community for the Linden Lab Second Life Binary UDP Protocol used for communication between virtual world simulators and viewers. For details on the protocol itself, see the Second Life Open Source Protocol documentation. For more on the OpenSimulator implementation of the protocol, see LLUDP ClientStatck.
- Megaregion
- An experimental and now deprecated type of region that could exceed the usual 256x256 meter size limit by combining multiple standard regions. Megaregions were deprecated in OpenSimulator v0.8.2 and support for them was removed in OpenSimulator v0.9.0. For more, see Megaregions.
- OGS1
- Acronym for OpenSimulator Grid Services version 1. A collection of grid services software used through OpenSimulator version 0.6 to provide UGAIM services to grid clients. OGS1 relied heavily on a Microsoft .NET technology called Remoting. Developers decided to move away from relying on .NET specific methods in order to make the software more portable and to increase performance. OGS2 was proposed and experimented with, but never adopted. In place of OGS1,
