The number of columns in the textarea. This property sets the width of the weblet, based on the average character width for the font used, such that approximately the specified number of columns of text will be visible. Note that the mechanism used to determine the actual width is browser specific and will result in slightly different sizes on different browsers.
If the width_design property is specified, it takes precedence and the cols property is ignored.
A number that specifies the number of columns.