Top-Level element describing a collection of data displays Set to true if this model is meant to be displayed. Can be set to false if it is just a submodel to be referenced. Used to define thresholds and other if-then-else relationships The value comparing to. Can be either AND, OR, or XOR The value comparing to. Reference to a variable whose value is the result Value of the result A Generic parameter. Can be used for any name-value pair Can be either GT, LT, GTE, LTE, EQ, NEQ Basic items that all display objects share Reference to a vriable in the pool. used to specify a change in an attribute(e.g. color, visibility) when the variable reaches a certain value or range of values Items that all graph-type display objects share can be any display object not that doesn't fit into one of the other categories including objects specified as primitive shapes (in svg), or can be used as the top-level element in a group of sub-objects. consists of some kind of indicator or icon that slides along a single value axis a line graph that plots values vs. time along a scrolling "paper" grid a graph that plots variables in the y axis vs. other variables in the x axis. The x,y variable pairs are specified with the xyPair elements a graph that represents variable values as distances outward from a central point. shows one or more variables as bars whose lengths correspond to the values shows the values of multiple variables as a percentage "slice" of their sum used for representing text and labels, including static text as well as annunciators a circular (or semi-circular) display that represents values as some sort of marker pointing to a value along the semi-circular value axis The angle position of the minimum value of the dial. Angle is in degrees, where 0 is straight up, to the left of straight up is negative, to the right is positive The angle position of the maximum value of the dial. Together with axisMin, defines the shape and orientation of the dial. a chart in the frequency domain plots magnitude and phase on the same frequency axis a typical aircraft heads-up display that consists of three vertical axes (typically used for velocity, pitch, and altitude) and one horizontal axis (typically for heading). The center vertical axis rotates according to a fifth variable (typically roll). The variables get applied in this order: center vertical axis rotation (roll), center vertical axis (pitch), horizontal axis (heading), right vertical axis (altitude), left vertical axis(velocity) a display object that looks like a button and, when pressed, can assign a value to a variable a table that can contain any other display object, including other grids an area of the page that displays longitude/latitude map info. The coordinates of all child objects of a map are in decimal latitude/longitude values. For distance attributes (e.g. circle radius), degrees latitude are used as the measurement unit. a reference to another model to be used as a sub object This id references another model in this project. All colors in DDML are encoded as 0xRRGGBB describes how the chart's variable_use items are paired Reference to one of this object's variable_use elements Reference to one of this object's variable_use elements