The application of the value of this attribute depends on the value of the CURRENT AXIS attribute. If CURRENT AXIS is "X", the value of ORIGIN specifies the location in the coordinate plane of the left edge of the viewing window (assuming that ORIENTATION is "UP" or "VERTICAL").
If CURRENT AXIS is "Y", the value of ORIGIN specifies the location in the coordinate plane of the bottom edge of the viewing window (assuming that ORIENTATION is "UP" or "VERTICAL").
If the LOGARITHMIC attribute is turned on (value is 1), the value of ORIGIN is required to be non-zero and positive. When you set the value of LOGARITHMIC to 1, if the current value of ORIGIN is zero or negative, the value of ORIGIN will be set to 1.
The value of ORIGIN can be changed by the operator if the USER SCROLL attribute value is set to 1. In this case, the new value can be read back from ORIGIN by the HTBasic program.
