XML elements and non-core types with less strict reuse rules than ‘tspi-core’; it imports the schemas of the ‘tspi-core’and ‘tspi-ext’ namespaces. A place ("an identifiable part of any space") that is identified using geographic identifiers (e.g., a name). A spatial reference system using geographic identifiers is established that relates locations to positions. Gazetteers are then used to establish directories of (geographically) identified locations along with their corresponding positions. A place ("an identifiable part of any space") that is identified using (physical) addresses (e.g., postal address). A systematic mapping may be established based on the structure of the addressing scheme that allows for geocoding, the process of converting addresses (e.g., "1600 Amphitheatre Parkway, Mountain View, CA") into positions (e.g., {37.423021, -122.083739}, a geodetic latitude/longitude coordinate-pair). "Virtual" addresses (e.g., in cyberspace), or virtual world identifiers, might be specified using Uniform Resource Identifiers (URI), however they are outside of the scope of this TSPI schema. Point: A point as profiled from ISO 19136:2007 (GML) for use in the TSPI Schema but extended to include both assessments of the accuracy and/or resolution of the coordinate tuple as well as optional specification of one or more character-oriented presentations of the coordinate tuple based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. Line String: A line string as profiled from ISO 19136:2007 (GML) for use in the TSPI Schema but extended to include both assessments of the accuracy and/or resolution of the coordinate tuples as well as optional specification of one or more character-oriented presentations of the coordinate tuples based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. A line string is a special curve that consists of a single segment with linear interpolation. It is defined by two or more coordinate tuples, with linear interpolation between them. Circle: A circle as profiled from GML 3.3 (OGC 10-129r1) SimpleCircleByCenterPoint for use in the TSPI Schema but extended to include both assessments of the accuracy and/or resolution of the center point coordinate tuple as well as optional specification of one or more character-oriented presentations of the center point coordinate tuple based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. A circle is an arc by center point with identical start and end angles to form a full circle. This representation can be used only in 2D. Elliptical Surface: A surface that is bounded by an ellipse, as developed based on ISO 19136:2007 (GML) Polygon for use in the TSPI Schema but defined in terms of the content model of an ellipse and extended to include both assessments of the accuracy and/or resolution of the coordinate tuples as well as optional specification of one or more character-oriented presentations of the coordinate tuples based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. An ellipse is an arc that is specified by a center point, and oriented semi-major/semi-minor axes of specified length. This representation can be used only in 2D. Polygon: A polygon as profiled from ISO 19136:2007 (GML) for use in the TSPI Schema but extended to include both assessments of the accuracy and/or resolution of the coordinate tuples as well as optional specification of one or more character-oriented presentations of the coordinate tuples based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. Simple Polygon: A simple polygon as profiled from GML 3.3 (OGC 10-129r1) for use in the TSPI Schema but extended to include both assessments of the accuracy and/or resolution of the coordinate tuples as well as optional specification of one or more character-oriented presentations of the coordinate tuples based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. A simple polygon is a specialized polygon that has a simplified encoding of the logically equivalent GML 3.2 Surface with a single GML 3.2 PolygonPatch as its surface patch consisting of a single LinearRing as its exterior boundary and does not have any interior boundary. Thus the usage of the term 'simple' here refers to a specialized polygon with a _simplified_ encoding, which is _simply_ connected (no interior rings) and uses a _simple_ closed curve (no self-crossings) to represent its single boundary ring. The last coordinate does _not_ have to repeat the first coordinate in this simplified encoding, so only three control points are required to specify a simple polygon. Simple Rectangle: A simple rectangle as profiled from GML 3.3 (OGC 10-129r1) for use in the TSPI Schema but extended to include both assessments of the accuracy and/or resolution of the coordinate tuples as well as optional specification of one or more character-oriented presentations of the coordinate tuples based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. A simple rectangle is the special case of a simple polygon, which has exactly 4 control points in its boundary encoding representing the 4 corners of the rectangle. Envelope: An envelope as developed based on ISO 19136:2007 (GML) Polygon for use in the TSPI Schema but defined in terms of the content model of a GML Envelope and extended to include both assessments of the accuracy and/or resolution of the pair of coordinate tuples as well as optional specification of one or more character-oriented presentations of the pair of coordinate tuples based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. An envelope defines an extent using a pair of positions defining opposite corners in arbitrary dimensions. The first direct position is the "lower corner" (a coordinate position consisting of all the minimal ordinates for each dimension for all points within the envelope), the second one the "upper corner" (a coordinate position consisting of all the maximal ordinates for each dimension for all points within the envelope). Circular Surface: A surface that is bounded by a circle, as developed based on ISO 19136:2007 (GML) Polygon for use in the TSPI Schema but defined in terms of the content model of a circle and extended to include both assessments of the accuracy and/or resolution of the coordinate tuples as well as optional specification of one or more character-oriented presentations of the coordinate tuples based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. A circle is an arc that is specified by a center point, a radius, and which has identical start and end angles. This representation can be used only in 2D. Elliptical Surface: A surface that is bounded by an ellipse, as developed based on ISO 19136:2007 (GML) Polygon for use in the TSPI Schema but defined in terms of the content model of an ellipse and extended to include both assessments of the accuracy and/or resolution of the coordinate tuples as well as optional specification of one or more character-oriented presentations of the coordinate tuples based on the sexagesimal, grid-metre, zone-metre, quadrangle and/or numeric-bit location forms. An ellipse is an arc that is specified by a center point, and oriented semi-major/semi-minor axes of specified length. This representation can be used only in 2D. Acceleration: A physical measure that is restricted to the "acceleration" category of mutually comparable physical quantities. Amount of Substance: A physical measure that is restricted to the "amount of substance" category of mutually comparable physical quantities. Area: A physical measure that is restricted to the "area" category of mutually comparable physical quantities. Capacitance: A physical measure that is restricted to the "capacitance" category of mutually comparable physical quantities. Electric Charge: A physical measure that is restricted to the "electric charge" category of mutually comparable physical quantities. Electric Conductance: A physical measure that is restricted to the "electric conductance" category of mutually comparable physical quantities. Electric Current: A physical measure that is restricted to the "electric current" category of mutually comparable physical quantities. Electric Resistance: A physical measure that is restricted to the "electric resistance" category of mutually comparable physical quantities. Electromotive Force: A physical measure that is restricted to the "electromotive force" category of mutually comparable physical quantities. Energy: A physical measure that is restricted to the "energy" category of mutually comparable physical quantities. Force: A physical measure that is restricted to the "force" category of mutually comparable physical quantities. Frequency: A physical measure that is restricted to the "frequency" category of mutually comparable physical quantities. Geopotential Energy Length: A physical measure that is restricted to the "geopotential energy length" category of mutually comparable physical quantities. Illuminance: A physical measure that is restricted to the "illuminance" category of mutually comparable physical quantities. Inductance: A physical measure that is restricted to the "inductance" category of mutually comparable physical quantities. Irradiance: A physical measure that is restricted to the "irradiance" category of mutually comparable physical quantities. Length: A physical measure that is restricted to the "length" category of mutually comparable physical quantities. Linear Density: A physical measure that is restricted to the "linear density" category of mutually comparable physical quantities. Linear Energy Transfer: A physical measure that is restricted to the "linear energy transfer" category of mutually comparable physical quantities. Luminous Flux: A physical measure that is restricted to the "luminous flux" category of mutually comparable physical quantities. Luminous Intensity: A physical measure that is restricted to the "luminous intensity" category of mutually comparable physical quantities. Magnetic Flux: A physical measure that is restricted to the "magnetic flux" category of mutually comparable physical quantities. Magnetic Flux Density: A physical measure that is restricted to the "magnetic flux density" category of mutually comparable physical quantities. Magnetic Flux Density Gradient: A physical measure that is restricted to the "magnetic flux density gradient" category of mutually comparable physical quantities. Mass: A physical measure that is restricted to the "mass" category of mutually comparable physical quantities. Mass Density: A physical measure that is restricted to the "mass density" category of mutually comparable physical quantities. Mass Fraction: A physical measure that is restricted to the "mass fraction" category of mutually comparable physical quantities. Mass Rate: A physical measure that is restricted to the "mass rate" category of mutually comparable physical quantities. Noncomparable Unit: A physical measure that is restricted to the "noncomparable" category of physical quantities. Plane Angle: A physical measure that is restricted to the "plane angle" category of mutually comparable physical quantities. Power: A physical measure that is restricted to the "power" category of mutually comparable physical quantities. Power Level Difference: A physical measure that is restricted to the "power level difference" category of mutually comparable physical quantities. Power Level Difference Length Gradient: A physical measure that is restricted to the "power level difference length" category of mutually comparable physical quantities. Pressure: A physical measure that is restricted to the "pressure" category of mutually comparable physical quantities. Pure Number: A physical measure that is restricted to the "pure number" category of mutually comparable physical quantities. Radiation Absorbed Dose: A physical measure that is restricted to the "radiation absorbed dose" category of mutually comparable physical quantities. Radiation Dose Equivalent: A physical measure that is restricted to the "radiation dose equivalent" category of mutually comparable physical quantities. Radionuclide Activity: A physical measure that is restricted to the "radionuclide activity" category of mutually comparable physical quantities. Rate: A physical measure that is restricted to the "rate" category of mutually comparable physical quantities. Reciprocal Area: A physical measure that is restricted to the "reciprocal area" category of mutually comparable physical quantities. Reciprocal Time: A physical measure that is restricted to the "reciprocal time" category of mutually comparable physical quantities. Solid Angle: A physical measure that is restricted to the "solid angle" category of mutually comparable physical quantities. Sound Speed Ratio: A physical measure that is restricted to the "sound speed ratio" category of mutually comparable physical quantities. Speed: A physical measure that is restricted to the "speed" category of mutually comparable physical quantities. Surface Mass Density Rate: A physical measure that is restricted to the "surface mass density" category of mutually comparable physical quantities. Thermodynamic Temperature: A physical measure that is restricted to the "thermodynamic temperature" category of mutually comparable physical quantities. Time: A physical measure that is restricted to the "time" category of mutually comparable physical quantities. Volume: A physical measure that is restricted to the "volume" category of mutually comparable physical quantities. Volume Flow Rate: A physical measure that is restricted to the "volume flow rate" category of mutually comparable physical quantities. Volume Fraction: A physical measure that is restricted to the "volume fraction" category of mutually comparable physical quantities.