Controlling scrolling text with Lingo or JavaScript syntax

You can script in Lingo or JavaScript syntax to scroll text and determine the location of specific text within the text box for text and field cast members. For example, this statement sets the scrollTop value for the text cast member called Discussion to 0, which makes its first line appear at the top of its scrolling field:

member("Discussion").scrollTop = 0

This procedure can be useful for making a scrolling field automatically scroll back to the top. For more information about the following methods and properties, see the Scripting Reference topics in the Director Help Panel.

To scroll up or down by a specific number of pages in a text or field cast member, use the scrollByPage method.
To scroll up or down by a specific number of lines in a text or field cast member, use the scrollByLine method.
To determine the number of lines that appear in a field cast member on the Stage, set the lineCount cast member property. (This property doesn't apply to text cast members.)
To determine a line's distance from the top edge of a field cast member, use the linePosToLocV() method.
To determine the number of the line that appears at a specific vertical position in a field cast member, use the locVToLinePos() method. (This measures the distance from the top of the cast member, not what appears on the Stage.)
To determine the point in a field cast member that is closest to a specific character, use the charPosToLoc() method.
To determine the character that is closest to a specific point in a field cast member, use the locToCharPos() method.
To check or set the distance from the top of the line that is currently visible to the top of the box for a scrolling field cast member, test or set the scrollTop cast member property.