columns:id	shelfoffsetheight|NUMERIC	shelfgap|NUMERIC	drillinggriddiameter|NUMERIC	shelfdrillingdistance|NUMERIC	shelfdrillingdiameter|NUMERIC	shelfdrillingdepth|NUMERIC	symbol_name|TEXT	symbol_name2|TEXT	min_board_thickness|NUMERIC	max_board_thickness|NUMERIC	griddistance|NUMERIC	drillingpattern|TEXT	drillingpattern_shelf|TEXT
indexes:id|UNIQUE													
