Description A GtkSourceMark marks a position in the text where you want to display additional info. It is based on GtkTextMark and thus is still valid after the text has changed though its position may change. GtkSourceMarks are organised in categories which you have to set when you create the mark. Each category can have a pixbuf and a priority associated using gtk_source_view_set_mark_category_pixbuf and gtk_source_view_set_mark_category_priority. The pixbuf will be displayed in the margin at the line where the mark residents if the "show-line-marks" property is set to TRUE. If there are multiple marks in the same line, the pixbufs will be drawn on top of each other. The mark with the highest priority will be drawn on top.