2.4.4.152 IndFirst
The IndFirst cell is a vLength custom token grouping that specifies the distance that the first line of text in each paragraph of a shape’s text block is indented from the left edge of the paragraph. It MUST have a Row_Type parent element that has a Paragraph Section_Type parent element.
If the indentation position is located outside the boundary of the shape’s text block, the closest position on the boundary of the shape’s text block MUST be used in its place.