Abbreviations

Table below consists of a list of commonly used words and phrases in the OpenX Designers documentation.

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Abbreviations	Abbreviations in Reports	Meanings
PC	PC	Point of Curvature
PI	HPI	Horizontal Point of Intersection
CC	CC	Centre of Curvature
PT	PT	Point of Tangency
TS	TS	Tangent to Spirals
SC	SC	Spiral to Curve
CS	CS	Curve to Spiral
ST	ST	Spiral to Tangent
SPI	SPI	Spiral Point of Intersection
PRC	PRC	Parabolic Reverse Curve
PCC	PCC	Point of Compound Curvature
SS	SS	Spiral to Spiral Point
EQN	EQN	Station Equation
EQNBK	EQNBK	Station Equation Back
EQNAHD	EQNAHD	Station Equation Ahead
POB	START	Point of Beginning
POE	END	Point of Ending
EVT	EVT	Event Point
PVC	VPC	Vertical Point of Curvature
PVI	VPI	Vertical Point of Intersection
PVT	VPT	Vertical Point of Tangency
PVCC	PVCC	Point of Vertical Compound Curve
PVRC	PVRC	Point of Vertical Reverse Curve
VEVT	VEVT	Vertical Event Point
VLOW	VLP	Vertical Low Point
VHIGH	VHP	Vertical High Point
CSV	CSV	Comma Separated Value file (Excel CSV file)
DGN	DGN	DGN (design) Bentley's 2D/3D Drawing CAD File
IFC	IFC	Industry Foundation Class File Format
IRD	IRD	InRoads Roadway Design File
HEC- RAS Data	HEC- RAS Data	Hydrologic Engineering Center-River Analysis System
ACS	ACS	Auxiliary Co-ordinate System
RSS	RSS	Really Simple Syndication Web feed that allows users and applications to access updates to website.
LS	LS	Left Side (edge)
RS	RS	Right Side (edge)
NC	NC	Normal Crown
NCIN	NCIN	Normal Crow Inside
NCOUT	NCOUT	Normal Crown Outside
LC	LC	Level Crown
LCIN	LCIN	Level Crown Inside
LCOUT	LCOUT	Level Crown Outside
RC	RC	Reverse Crown
RCIN	RCIN	Reverse Crown Inside
RCOUT	RCOUT	Reverse Crown Outside
FS	FS	Full Super
FSIN	FSIN	Full Super Inside
FSOUT	FSOUT	Full Super Outside
U	U	Undefined
L	L	Linear
BRC	BRC	Biquadratic Reverse Curve
CRC	CRC	Cubic Reverse Curve
SRC	SRC	Symmetrical Reverse Curve