If the mouse is moved beyond the margin of a manipulable field, the cursor will change displaying a symbol which indicates change of size. You cannot specify this cursor symbol. With columns the size can be changed at the right margin of each column.

You can start the maximization by using the left mouse button. A grey hatched line indicating the mouse position will be displayed (the width of the hatched line depends on the attribute .collinewidth[integer]). If the mouse is moved (by pressing the left mouse button), the hatched line will move along. The maximization stops when the mouse button is released.

This attribute is used as other single-indexed attributes for tablefield, i.e. .colsizeable[0] provides the default to be used if no value is specified for the column. The default of .colsizeable[0] is false.