Changes the style for items in the buffer.
Changes the style for a region in the buffer by applying a style delta. If start and end are both -1, then the currently selected items are changed. If start is not -1 and end is -1, then the style is changed from start until the end of the selection.
Changes the style for a region in the buffer to a specific style. If start and end are both -1, then the currently selected items are changed. If start is not -1 and end is -1, then the style is changed from start until the end of the selection.
Changes the style of the selected items by applying a style delta.
Changes the style of the selected items to a specific style. The buffer's style list must contain style, otherwise the style is not changed. See also convert.