* code_map/model2.ml: comment
* code_map/parsing2.mli: comment
* code_map/model2.ml: comment
* code_map/model2.ml: microlevel field  rename
* code_map/draw_microlevel.ml: reindent
* code_map/model2.ml: rename
* code_map/draw_microlevel.ml: factorize
* code_map/draw_microlevel.ml:
* code_map/draw_microlevel.ml: line_in_column
* code_map/draw_microlevel.ml: line and pos type
* code_map/draw_microlevel.ml: cleaning
* code_map/model2.ml: adding content with glyphs
* code_map/draw_microlevel.ml: renaming