[ /1 width=1 by tweq_sort/
| /1 width=1 by tweq_lref/
| /1 width=1 by tweq_gref/
-| cases p -p /2 width=1 by tweq_abbr_pos, tweq_abbr_neg/
+| cases p -p /2 width=1 by tweq_abbr_pos, tweq_abbr_neg/
| /1 width=1 by tweq_abst/
| /2 width=1 by tweq_appl/
| /2 width=1 by tweq_cast/