Variable Overflow`Const`

Overflow: {
    Clip: "clip";
    Ellipsis: "ellipsis";
    Shrink: "shrink";
    Visible: "visible";
    Wrap: "wrap";
} = ...

The behavior of the text when it exceeds the size of the bounding box.

ReadonlyClip: "clip"

Note - This is not part of the OOXML spec
ReadonlyEllipsis: "ellipsis"

Not OOXML spec - Not support
ReadonlyShrink: "shrink"

Shrinks text to fit within the bounding area
ReadonlyVisible: "visible"

Visible means that the text will attempt to be visible on overflow. It can still be obscured (either z-index, or another blocking element) or fall out of the viewport.
ReadonlyWrap: "wrap"

Wrap text to keep within the left right margins but may overflow vertically.

Variable OverflowConst