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hoc_ac_ · hoc_cross_x_ · hoc_cross_y_ · hoc_obj_

# Predeclared Variables

`hoc_ac_`

  A variable used by the graphical interface to communicate with the interpreter. It is very volatile. It sometimes holds a value on a function call. If this value is needed by the user it should be copied to another variable prior to any other function call.

`hoc_obj_`
  Syntax:

    `hoc_obj_[0]`

    `hoc_obj_[1]`

  Description:
    When a line on a `Graph` is picked with the PickVector tool two new `Vector`'s are created containing the y and x coordinates of the line. The y vector is referenced by hoc_obj_[0] and the x vector is referenced by hoc_obj_[1].

`hoc_cross_x_`
  Syntax:
    `hoc_cross_x_`
  Description:
    X coordinate value of the last Crosshair manipulation.

  See also

  Crosshair

`hoc_cross_y_`
  Description:
    Y coordinate value of the last Crosshair manipulation.

  See also

  Crosshair

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