X Cell (Action Tags Section)
The x -coordinate position in the shape's local coordinates around which the action tag button is placed.
In previous versions of Microsoft Visio, action tags are called smart tags.
The X and Y cells define a point in the shape's local coordinates, and the X Justify and Y Justify cells define where to place the action tag button in relation to that point.
To get a reference to the X cell by name from another formula, or from a program using the CellsU property, use:
||SmartTags. name .X where SmartTags. name is the name of the action tag row
To get a reference to the X cell by index from a program, use the CellsSRC property with the following arguments:
||visRowSmartTag + i where i = 0, 1, 2...